UNIVERSITY OF CALIFORNIA AT LOS ANGELES A HISTORY OF MODERN PHILOSOPHY A HISTORY OF MODERN PHILOSOPHY (FROM THE RENAISSANCE TO THE PRESENT) BY B. C. BURT, A.M. AUTHOR OF A "BRIEF HISTORY OF GREEK PHILOSOPHY," OF TRANSLATIONS OF ERDMANN'S "GRUNDRISS DER GE=CHICHTE DER PHILOSOPHIE DBS NEUN- ZEHNTEN JAHRHUNDERTS," AND HEGEL'S " RECHTS-, PFLICHTEN-, UNO RELIGIONSLEHRE;" SOMETIME DOCENT (LECTURER) IN THE HISTORY OF PHILOSOPHY AT CLARK UNIVERSITY En 3to0 Uolumes VOL. I. 773 CHICAGO A. C. McCLURG AND COMPANY 1892 MAY 1908 COPYRIGHT BY A. C. MCCLURG AND Co. A. D. 1892 "335 v.l PREFACE. UNDERTAKING only to a limited extent the higher logico- genetic development and the complete and final valuation of ideas and systems of thought, the present work aims primarily merely to present with considerable fulness, and as simply and clearly as may be consistent with scien- tific accuracy, the principal content of the leading systems (and partial systems) of philosophy in modern times, together with a reasonable amount of information re- garding philosophical authors and works. It aims to be something more than a mere " chronological " account of systems, authors, and works ; to show, in a general way, at least, the actual historical connections of systems, i.e., to exhibit the historical continuity of modern philo- sophical thought, and, further, to furnish materials and stimulus to the student for the study of the higher genesis and final values of ideas and systems. The paragraphs of characterization (marked Result) are of course intended rather as helpful suggestions than as complete, absolute statements of final truth. It seems not out of place to remind the reader that where, as almost necessarily in a case like the present, a work contains numerous quota- tions, direct and indirect, and adaptations from a great variety of authors, a certain heterogeneity and lack of smoothness in style is inevitable. The apparently dispro- portionate length at which certain recent systems are treated will find sufficient excuse, it is assumed, in the fact that they have not as yet become commonly known through other histories of philosophy. For the benefit of VI* PREFACE. readers unfamiliar with German and Italian, the titles of the principal philosophical works in these languages have been translated. In the preparation of the present work the following- named authorities have been chiefly depended upon : WORKS OF THE PHILOSOPHERS (ORIGINALS AND TRANSLATIONS). Noack's " Historisch-biographisches Handworterbuch zur Geschichte der Philosophic" (1879). Zeller's " Geschichte der neuern Philosophic seit Leibniz " (1873)- Erdmann's " Grundriss der Geschichte der Philosophic." (Also the translation of the same, made in part by the present writer.) " Dictionnaire des Sciences Philosophiques," etc., edited by M. Adam Franck (1875). Volumes in " Blackwood's Philosophical Classics," edited by Professor Knight. Volumes in Griggs's " Philosophical Classics," edited by Professor Morris. Volumes in " English Philosophers," edited by Professor Monck. Articles in the " Encyclopaedia Eritannica." Ueberweg's "History of Philosophy" (Morris's transla- tion, vol. ii., containing also histories of English and of American Philosophy, by Ex President Porter, and a "History of Italian Philosophy," by Professor Botta). Fischer's " Geschichte der neuern Philosophic " (also trans- lation of vol. i. of the same by J. P. Gordy). Stockl's " Lehrbuch der Geschichte der Philosophic" (1870). Schwegler's " Handbook of the History of Philosophy " (Stirling's translation). Morris's "British Thought and Thinkers." McCosh's "Scottish Philosophy." Articles in "Journal of Speculative Philosophy." To some extent, also, the Histories of Hegel, Michelet, Lewes, Morell, Fortlage, Windelband, and Willm and Erdmann's larger work, have been used. TABLE OF CONTENTS. FIRST PERIOD OF MODERN PHILOSOPHY. PACK i. THE GENERAL CHARACTER AND THE MAIN DIVISIONS OF MODERN PHILOSOPHY 15 2. GENERAL CHARACTERISTICS OF THE FIRST PERIOD OF MODERN PHILOSOPHY 16 I. 3. The Rehabilitation of Ancient Systems of Philosophy . 17 (i) 4. Platonists and Neo-Platonists 17 5. Pletho 18 6. Bessarion 18 7. Ficinus . 18 8. Pico, Reuchlin, Agrippa, Bovillus 19 (2) 9. Aristotelians 20 10. Averroists 21 it. Alexandrists (Pomponatius, etc.) 21 (3) 12. Ciceronians ( Valla, Agricola, Vives, Nizolius, Ramus) 23 (4) 13. Stoics 25 (5) M- Sceptics (Montaigne, Le Charron, Sanchez, and others) 25 (6) 1 5. lonicist 27 (7) 16. Epicurean (Gassendi) 27 II. 17. The Association of Philosophy with (Protestant) The- ology. Semi- Rationalists 29 (1) 18. Philip Mdanchthon (Works; Philosophy) . . . 29,31 19. Nicolaus Taurellus (Works; Philosophy) .... 31 (2) 20. Mystics : Sebastian Franck 32 21. Valentin IVeigel 33 22. Jacob Boehme ( Works; Philosophy) 33.34 III. 23. The (Relatively) Independent Cultivation of Philos- ophy as such 35 (i) 24 Natural Philosophers 35 25. Nicolaus Cusanus (Works; Philosophy) .... 39 26. Theophrastiis Bombastus Paracelsus (Works; Phi- losophy) 37 27. Hieronyinus Cardanus (Works ; Philosophy) . . 38.39 Viii CONTENTS. PACK 28. Bernardinus Telesius (Works ; Philosophy) ... 40 29. Frandscus Palritius ( Works ; Philosophy) .... 41 30. Thomas Campanella (Works; Philosophy) . . . 41,42 31. Pompeio Ucilio Vanini (Works ; Philosophy) ... 44 32. Giordano Bruno ( Works ; Philosophy) .... 45-47 (2) 33. Ethical Philosophers 51 34. Nicole) Macchiavelli 52 35- Thomas More 52 36. Johannes Oldendorp 52 37. Nicolaus Hemming 53 38- Jean Bodin 53 39. Albericus Gentilis 54 40. Benedict Winckler 55 41. Hugo Grotius (Works ; Philosophy) . . 55,56 42. Richard Hooker ( Works ; Philosophy) . . 56-60 SECOND PERIOD OF MODERN PHILOSOPHY. 43. CHARACTERISTICS OF THE SECOND PERIOD OF MODERN PHILOSOPHY 61 44. Francis Bacon (Works; Philosophy; I. The Survey of the Sciences: Introduction; History; Poesy; Philosophy (Philosophia Prima) ; Divine Philoso- phy; Natural Philosophy; Human Philosophy; Divine Learning; II. The New Method of the Interpretation of Nature : Introduction ; The Idola of Human Knowledge; The Positive Side of the Interpretation of Nature; III. Natural and Exper- imental History ; " Principles and Origins ; " Result, Bacon's Position and Rank as a Philosopher) . 61-77 45. Thomas Hobbes (Works; Philosophy: Problem, PaTts, and~End of Philosophy; First Philosophy; Geometry ; Doctrine of Motion ; Physics ; " Moral Philosophy ;" Civil I hilosophy; Result) . . . 77-87 46. Lord Herbert of Cherbury ( Works ; Philosophy) . 87-90 47. The Cartesians 90 48. Descartes (Works; Philosophy; Standpoint and Method ; Metaphysics : First Principle ; Knowl- edge of other Existences than Self; (i) God; (2) Existence of External World; Substances; Physics; God; Result) 90-100 49. Arnold Geulincx (Works; Philosophy) . . . . 100-102 50. Nicolas Malebranche (Works ; Philosophy) . . . 102-104 51. Baruch de Spinoza (Works; Philosophy; Motive and Genesis of Spinoza's Philosophy; Doctrine of God ; The Attributes of Thought and Extension ; CONTENTS. ix PAGE Origin and Nature of the Emotions ; Human Ser- vitude, or the Power of the Emotions ; The Power of the Intellect, or Human Freedom ; The State ; Religion; Result) 104-116 5 A The Cambridge Plalonists, and Richard Cumber- land (Anti-Hobbean, Anti-Cartesian) . . . .116,117 53. Benjamin Whichcote 117,118 54. John Smith ( Philosophy ; Knowledge ; Stages of Spiritual Attainment ; Immortality ; God ; Re- ligion) 118-120 55. Nathaniel Culverwel 12O, 121 56. Ralph Cudworth (Works; Philosophy; Problems; Existence of God ; God in Relation to Matter , The Plastic Nature ; Eternal and Immutable Morality ; Liberty and Necessity) 121-125 57. Henry More (Works; Philosophy; Problems; Mat- ter and Spirit; The Soul of Man and the World- Soul; Morality) 125-129 58. Richard Cumberland (Philosophy) 129, 130 59- John Locke (Works; Philosophy; Human Under- standing: Introduction: Scope, Value, and Method of the proposed Investigation ; Innate Ideas ; Spec- ulative Principles ; Practical Principles ; Mere Ideas ; Origin and Sorts of Ideas ; Ideas of Modes ; Ideas of Substances ; Ideas of Relations ; Ade- quateness in Ideas ; Association of Ideas ; Words ; Knowledge : its Nature and Kinds ; Degrees of Knowledge ; Extent of Knowledge ; " Improvement of Knowledge ; " Reason ; Wrong Assent ; Division of the Sciences. II. Natural Philosophy. III. Ethics; Morality; Education; Politics; Religion; Result) 130-159 60. Critics and Defenders of Locke (Stillingflfet, Bur- thogge, Lee, Browne, Mayne, Perronet, Bold, Cock- burn) 159-161 6l. English Deism 161-164 62. George Berkeley (Works; Philosophy; Result) . . 164-169 /' & 63. English Moralists of the Eighteenth Century . . . 169 .S ./ 64. Anthony Cooper, Earl of Shaftesbury ( Works ; Phi- losophy ; Metaphysics : God ; Ethics ; Esthetics ; , Result) 169-173 \/| 65. Francis Hutcheson (Works ; Philosophy ; Psychology . and Metaphysics ; Ethics; ^Esthetics; Result) .173-17? V 66. Joseph Butler (Works; Philosophy; Theory of Re- ligion; Ethics; Result) 177-182 67. Samuel Clarke (Works; Philosophy; Being and At- C CONTENTS. PAGE tributes of God ; Foundation of Morality ; Free- dom; Result) 182-184 J 68. Richard Price (Works ; Philosophy ; Result) . . 184, 185 */% 69. Adam Smith (Works; Philosophy) 185-187 ^ ./ 70. William Paley( Works; Philosophy) 187,188 "jL^f/ume (Works; Philosophy; Importance and the Method of the Science of Human Nature ; Origin of our Ideas ; The Ideas of Space and Time, Num- ber, Existence, and External Existence ; The Rela- tion of Cause and Effect ; The Relation of Identity ; Objective Existence ; The Passions ; Morals ; Religion; Result) .188-201 Leibnitz (Works; Earlier Doctrines; Final Stand- point; Substance and the Monad; Representa- tions; Ideas; Appetitions; The External World; God; Result) 201-214 73- Walther Ehrenfried, Count von Tschirnhausen y (Works; Philosophy) 214-216 74. Samuel Puffendorf (Works; Philosophy) . . .216,217 75. Christian Thoniasius (Works; Philosophy) . .217-219 76. Christian Wolff ( Works ; Philosophy ; Standpoint and Method ; The Divisions of Philosophy ; Ontol- ogy ;. Cosmology ; Psychology; Natural Theology ; Practical Philosophy; Result) 220-229 77. Woljfians and Anti-Woljfians 229-232 / 78. The French "Illumination" 232 y/ 79-_ Voltaire (Works; Philosophy; Result) . . . .233-235 80. Montesquieu (Works; Philosophy) 235-237 8l. fean Jacques Rousseau (Works; Philosophy; God and Nature ; The State ; Morality and Educa- tion; Result) 277-242 82. Charles Bonnet (Works ; Philosophy) .... 242, 244 83. Jean Baptiste Robinet (Philosophy) 244,245 84. Etienne Bonnot de Condillac (Works; Philosophy; Origin of Ideas ; Method of Knowledge) . . . 245-247 %$. D^stutt de Tracy (Works; Philosophy; Problems of Philosophy; Ideology; Morals) 247-249 86. Claude Adrien Helvetius (Works; Philosophy) .249-251 87. Denis Diderot (Works; Philosophy) . . . . .251-253 88. Julien Offray de Lammettrie (Works ; Philosophy) 253, 2^4 89. Baron D'Holbach (Works; Philosophy) . . .254-256 90. Pierre Jean Cabanis (Works ; Philosophy) . . .256-258 91. The German "Illumination" (Reimarus, Sttlzer, Tetens, Feder, Meiners, Basedow, Mendelssohn, Lessing) 258-260 92. Mendelssohn (Works; Philosophy) 260-262 CONTENTS. xi PAGB 93. Lessing (Works; Philosophy) 262-265 94. Italian Philosophy 265 95. Giovanni Battista Vico ("Work; Philosophy) . . . 269 96. American Philosophy, (Jonathan Edwards and oth- ers) 266, 267 THIRD PERIOD OF MODERN PHILOSOPHY. 97. CHARACTERISTICS (AND DIVISIONS) OF THE THIRD PE- / RIOD OF MODERN PHILOSOPHY 268 v/9.8. Scotch Systems 269 99. Thomas Reid (Works; Philosophy; Standpoint and Method ; Sensation and Perception ; Common / Sense; The Powers of Man; Result) . . . .269-274 ^f too. Dugald Stewart (Works; Philosophy) . . . .274-276 101. Thomas Brown (Works; Philosophy; Result) .276-278 102. Sir William Hamilton (Works; Philosophy; Gen- eral Conception of Philosophy ; Phenomenology ; Natural Realism and Natural Dualism ; Latent Modifications ; Necessary Cognition ; The Law of the Conditioned and its Applications; Causa- tion) 278-287 103. James Frederick Ferrier (Works; Philosophy; In- troduction : Conception and Method of Philosophy; Epistemology ; Agnoi'ology ; Ontology ; Result) 287-293 104. French Systems 293 105. Maine de Biran (Works; Philosophy; Result) .294-297 106. Pierre Laromiguitre 297-298 107. Pierre Paul Royer-Collard (Philosophy) .... 298 108. Victor Cousin (Works; Philosophy; Genesis of Cousin's System; Divisions of System; Method; Psychology ; Ontology ; Ethics ; History of Philos- ophy ; Result) 298-303 109. Theodore Jouffroy (Works; Philosophy) . . .303,304 1 10. Robert de Lamentiais (Works; Philosophy; Earlier Standpoint ; Later Standpoint) 304, 305 in. Auguste Comte (Works; Philosophy; Law of Hu- man Development ; Characteristics and Problem of Positive Philosophy; Advantages of the Positive Philosophy ; The Hierarchy of the Positive Scien- ces; Sociology ; Religion of Humanity ; Result) 305-312 112. German Systems 312,313 113. Immanuel Kant (Works; Kant's Earlier Develop- ment and Works ; Kant's Later Works ; Philoso- phy ; Introduction ; The Critique of Pure Reason; Problem ; Transcendental Esthetic ; Transcen- xii CONTENTS. PAGH dental Logic; The Analytic of Notions; The Categories; The Transcendental Deduction of the Categories; Analytic of Judgments ; Schematism of the Categories ; The System of Principles of the Pure Understanding; Ground of Distinction of Phenomena and Noumena ; Transcendental Dia- lectic ; Conceptions on Ideas of Pure Reason; Syllogisms ; Dialectical Conclusions of Pure Rea- son ; Transcendental- Paralogisms ; Criticism of Rational Psychology ; Antimony of Pure Reason ; Criticism of Rational Cosmology ; The Ideal of Pure Reason ; Criticism of Transcendental The- ology ; Transcendental Theory of Method ; Cri- 1 tique of Practical Reason ; The Notion of Prac- tical Reason; The Analytic of Pure Practical Reason ; The Notion of an Object of Pure Prac- tical Reason ; The Motives of Pure Practical Rea- son ; Dialectic of Pure Practical Reason ; Metho- dology of Pure Practical Reason ; Critique of Judgment ; Introduction ; Critique of ^Esthetical Judgment; Analytic; Dialectic of the ./Esthetic Faculty; Critique of Teleological Judgment: An- alytic; Dialectic of Teleological Judgment; The- ory of Method; Moral Proof of the Existence of God; The Metaphysical Foundation of Natural Science ; Introduction ; Phoronomy ; Dynamics ; Mechanics; Phenomenology; The Metaphysics of Morals ; Introduction ; Theory of Right ; Theory - of Virtue ; Religion within the Limits of Mere Reason; Result) 3I3-3 68 114. Reception of the Kantian Philosophy 368 A HISTORY OF MODERN PHILOSOPHY. INTRODUCTION. i. The General Character and the Main Divisions of Modern Philosophy. Modern Philosophy, as distin- guished from Mediaeval Philosophy, is occupied with the immanent and concrete, rather than the transcendent and abstract ; with the natural and the human, rather than the supernatural and the superhuman. As distinguished from Ancient Philosophy, it is occupied with the subject, rather than with the object ; with thought, rather than with being. It may be quite easily divided into three great periods, as follows : i . A period predominantly of reception and appro- priation (though with considerable self-assertion as against medievalism) ; 2. A period of original effort very largely destructive or negative (towards previous philosophy as well as the object of thought generally) ; 3. A period of equal originality, and more constructive or synthetic effort. Psychologically speaking, these periods may be viewed as, respectively, periods of (receptive) sense, (analytic) under- standing, and (synthetic) reason; logically, as periods of thesis, antithesis, synthesis. The first period extends from the middle of the fifteenth century to the beginning of the seventeenth ; the second, from the beginning of the seven- teenth century to the third quarter of the eighteenth ; and the third from the third quarter of the eighteenth century, onwards. 1 6 A HISTORY OF MODERN PHILOSOPHY. DIVISION I. FIRST PERIOD OF MODERN PHILOSOPHY. 2. General Characteristics of the First Period of Mod- em Philosophy. The beginnings of Modern Philosophy formed a part of the general human awakening in Europe in the fourteenth and fifteenth centuries. This awakening was, as every one is well aware, an awakening from a sort of " dogmatic slumber," in which human thought was wrapped up in the idea of a supra- mundane world, an- swering, as it now seems, to fancy and mere feeling, rather than to active sense, healthy understanding, and reason ; in which, along with logical acuteness, there existed a certain enslavement to preconceived ideas, and to authority in intellectual things. At the beginning, Modern Philosophy was, on the one hand, a revolt against a philosophy which, both by its content (which was constituted by the abstract and transcendental) and by its form (which was either mystical or else pedantically logical) had come to be want- ing in power to satisfy a real human interest ; on the other hand, an endeavor to substitute for that barren philosophy something more worthy of a strong consciousness of human dignity as such, and of the wealth and grandeur of visible Nature. This double character attaches to almost every form of early Modern Philosophy, until, so to say, it reaches its majority, and even after that time ; so that every new system, whatever else it may also be, is a protest against mere Scholasticism. The substitutions made for Scholasticism were in various directions, and of various degrees of completeness and originality. The revival of ancient learning and literature placed within the reach of the new impulse to philosophic thought accompanying and supporting like impulses in literature, the arts, and the sciences a noble wealth of ancient philosophical literature, which was eagerly seized upon and made the basis for GENERAL CHARACTERISTICS. IJ various schools of rehabilitated ancient philosophy. The new religious movement, Protestantism, found in ancient thinking (but to some extent also in mediaeval though non- scholastic mysticism) a stimulant and possible helper, which it associated with itself and adapted to its need. The cultivation of the natural sciences by both empirical and speculative methods furnished material and basis for a phi- losophy of Nature ; the actual political conditions of the period, and the revival of the political doctrines of the an- cients (particularly of Plato and Aristotle), presented occa- sions for the framing and putting forth of systems of political philosophy. It is possible to distinguish definite degrees (three in number) of originality or independence of philo- sophical effort in this first period of Modern Philosophy. There is ( i ) the relatively passive reception of the ancient systems, as such ; (2) the adaptation of ancient and medi- aeval systems to religious or theological uses; (3) a rela- tively independent cultivation of philosophical conceptions into systems of Nature-philosophy on the one hand, and political philosophy on the other. We have, then, in the treatment of the first period of Modern Philosophy, three grand divisions, which may be denoted as follows : The Rehabilitation of Ancient Systems ; The Association of Philosophy with (Protestant) Theology; The (Relatively) Independent Cultivation of Philosophy on its own Account. 3- I. THE REHABILITATION OF ANCIENT SYSTEMS OF PHILOS- OPHY. The ancient systems of thought rehabilitated were, naturally, principally those of (i) Plato and the Neo-Pla- tonists; and of (2) Aristotle. Other systems rehabilitated were (3) Ciceronianism ; (4) Stoicism; (5) Scepticism; (6) lonicism; (7) Epicureanism. 4- (i) Platonists and Neo-Platonists. Chief among the revivers of Platonism and Neo-Platonism were Georgius VOL. i. 2 1 8 A HISTORY OF MODERN PHILOSOPHY. Gemistus Pletho (circa 1355-1450), who was a learned Greek at the court of Cosmo de' Medici in Florence ; Bessarion of Trebizond (1395-1472), likewise a Greek, and a pupil of Pletho ; Marsilius Ficinus, or Marsilio Ficino (1433-1499) ; Giovanni Pico, of Mirandola (d. 1533) ; Johannes Reuchlin, the renowned German humanist (1455- 1522) ; Agrippa of Nettesheim (1487-1535) ; Carolus Bovillus, or Charles Bouille" (1470-1535) ; and Jacques Lefevre (1455-1537), professor in the University of Paris. 5- Pletho. Pletho not only enthusiastically expounded and defended Platonism and Neo-Platonism, but vigorously at- tacked Aristotle and his doctrine. Unlike most of the revivers of ancient systems, Pletho was non- Christian in his theology, and desired to substitute Platonism for Christianity. Two works of Pletho bear the titles " De Platonicse et Aris- totelicae Philosophise Differentia " and No/*o>i> 6. Bessarion. Bessarion was a more temperate admirer of Plato, though he too combated (discreetly) the doctrines of Aristotle, as maintained by George of Trebizond. He considered Plato more in accord than Aristotle with Chris- tian dogma. He rejected the Platonic doctrines of the pre-existence of the soul, the plurality of gods, and the world-soul. The chief work of Bessarion is entitled " In Calumniatorem Platonis." 7- Ficinus. The lectures of Pletho upon Platonism led to the founding at Florence by Cosmo de' Medici of a Platonic Academy. Of this, Ficinus, who had been a successful translator of the works of Plato, Plotinus, and others of the same general school, was made the first director. Ficinus, it is related, had in his private apartments but a single pic- ture, that of Plato, before which a light was continually PICO, REUCHLIN, ETC. 19 kept burning. He advocated the reading of the works of Plato along with the Hebrew-Christian Bible in church. The chief work of Ficinus is " Theologia Platonica de Animorum Immortalitate " (1482). 8. Pico, Reuchlin, Agrippa, Bovillus. Pico, Reuchlin, Agrippa, Bovillus, " blended with the Neo-Platonism Jewish Cabalistic doctrines, took a step in the direction of what was almost pure nature-philosophy." Pico taught that the " bond of union between God, man, and the world in their common perfection is Christ, the God-man ; that man knows and possesses God the more perfectly the more he employs the powers of knowing and willing natural to him ; but this natural happiness is merely a shadow of the super- natural which man attains to through the in-working of God." Works of Pico are "Apologia" (1489), " Oratio de Hominis Dignitate " (1496), " Disputationum adversus Astrologos " (1496). Reuchlin opposed Aristotelianism and Scholastic supersubtleties ; and maintained that there is no knowledge of the supersensible without faith. Works of Reuchlin are " De Arte Cabalistica" (1517); "De Verbo Mirifico" (1494). According to Agrippa, the high- est branch of philosophy is Magic. This is of three sorts : natural magic, which teaches the miraculous use of earthly things ; heavenly or celestial magic, which has to do with the drawing down to earth of the influences of the stars ; and religious magic, which teaches the art of obtaining from supernatural sources miraculous appearances. Magic controls the secret powers of the universe. Besides natural endowment in man, faith and a laborious study of theology, physics, and mathematics are prerequisites to the acquire- ment of the powers of the magician. 1 The chief work 01 Agrippa is entitled "De Occulta Philosophia" (1510); other works are " De Triplici Ratione Cognoscendi Deum," i Noack. 2O A HISTORY OF MODERN PHILOSOPHY. " De Vanitate et Incertitudine Scientiarum. " Bovillus teaches that philosophy leads to self-knowledge and union with God, that science is union of subject and object, that intelligence is the perfection of faith, that the universal is prior to the particular in knowledge, that the highest knowl- edge of God is ignorance, that the soul and matter and the visible world are immortal, that matter is the middle term between being and not-being, that creation is a free act flowing from the pure goodness of God. Works of Bo- villus are "Liber de Sensibus," "Liber de Intellectu," " Ars Oppositorum," etc. 1 9- (2) Aristotelians. The attacks of Pletho and Bessarion on Aristotle called forth replies from Gennadius, Patriarch of Constantinople (died circa 1454), and George of Trebi- zond (1396-1486), both of whom, besides being expoun- ders of Aristotle, were defenders of traditional Christianity. There were various other scholars in the fifteenth century who translated or commentated the works of Aristotle. Jacques Lefevre (the Platonist already mentioned) is said to have gone directly to the original sources for his Aris- totelianism. In northern Italy at Padua, Venice, and Bologna Aristotelianism was taught and defended by two rival schools of philosophers known as Averroists and Alex- andrists (followers of Alexander Aphrodisias, of the second century A. D.). The rise of the Alexandrist school was doubtless owing to existing sympathy with increasing hu- manism and naturalism, as opposed to the mystical panthe- ism of Averroes. An important point of difference in the controversy between the schools was that the Averroists maintained that the active reason in man was an emanation from the Deity, and the Alexandrists that it was not so, but a part of the universal reason, both schools, however, denying immortality. 1 Noack. A VERROIS TS. ALEXANDRISTS. 2 1 10. Averroists. Among the Averroists were Alexander Achillinus (d. 1512), professor of medicine and philosophy at Padua and Bologna; Augustinus Niphus (\$i2-circa 1550), physician and astrologer; Giacomo Zabarella (1533- 1589), professor of philosophy at Padua; Cesare Cremonini (1552-1631), successor of Zabarella at Padua. Zabarella is sometimes described as an " Averroist in physics, and an Alexandrist in psychology." Sensible knowledge, he says, is confused, and must be subjected to logical tests or a scien- tific method to become certain and true. The existent is always individual, though the principium individuationis is form, and not matter. Eternal motion presupposes an eternal mover separate from all matter. The active intel- lect is not one in all men. Works of Zabarella are " De Rebus Naturalibus Libri triginta" (1594), "Opera Logica" (1579), " Commentaria in Aristotelis Libros Physicorum " (1602), "In Aristotelis Libros de Anima." Zabarella has the credit of having had a truer appreciation of the impor- tance of scientific method than any other Aristotelian of his time. Cremonini has been called the last of the " Aris- totelians in Italy." He cannot be credited with the true scientific or (for that matter) philosophic spirit, since he refused to look through the telescope, because he feared the upsetting of his physical theories as a consequence of doing so. it. Alexandrists. Of the Alexandrists, the following seem the most worthy of mention: Leonicus Thomseus (1456- 1533), professor of philosophy at Padua; Andreas Caesal- pinus (1519-1603), a professor of natural history; Petrus Pomponatius, or Pietro Pomponazzi (1462-1524), said to have been the " most influential professor of philosophy of his age." Thomaeus went to the original Aristotle, and strongly advocated the doing so. His philosophical intel- ligence appears in his teaching the substantial agreement of 22 A HISTORY OF MODERN PHILOSOPHY. the doctrines of Plato and Aristotle. Caesalpinus tries to explain Aristotle apart from the commentators. His doc- trine is briefly stated as follows : Knowledge is of the universal definite conception, which is knowledge of sub- stance, unites matter and form. All things are medi- diately or immediately living. God is the universal mind, above human comprehension : he is pure spirit. The soul, which unites the parts of the body, is pure form : it is immortal. After death, it remains joined to the pure uni- versal matter. The perception of the One in all things is true divine happiness. Works of Caesalpinus are " Quaestiones Peripateticae " and " Dsemonum Investigatio." Pomponatius 3 (born at Mantua) studied medicine and philosophy at the University of Padua, and afterwards occupied the chair of philosophy there. Among the works of Pomponatius are the following : " Tractatus de Immor- talitate " (1516), " De Incantationibus " (1520), " De Fato, libero Arbitrio et Praedestinatione " (1523), "Apologia" against Contarini (1517), " Defensorium," against Niphus, the last two having special reference to the doc- trine of immortality. Pomponatius expresses the highest reverence for the philosopher in general, and for Aristotle in particular : the philosopher, he says, is to the ordinary human being as a real man is to a painted one, he is a god among men. The philosophy of Pomponatius is principally occupied with the three problems, of the immortality of the soul, of the influence of the spiritual world upon the material, and of the relation of divine providence to human liberty and destiny. Pomponatius asserts that, on the prin- ciples of the philosophy of Aristotle (which he accepts), the doctrine of the immortality of the soul cannot be main- tained, the soul, as the entelechy of the body, cannot be active without the body ; and thought, in the proper sense, cannot be carried on without sensible images. On the whole, Pomponatius thinks " the question of the immor- tality of the soul, like that of the immortality of the world, 1 Franck. CICERONIANS. 2$ is a question which reason cannot decide either affirma- tively or negatively, upon which God alone can afford us certain knowledge. For myself," he adds, " it suffices that Saint Augustine, who is of higher authority than Plato and Aristotle, believed in immortality." That is, Pomponatius professed " as a philosopher " not to admit the doctrine of the immortality of the human soul, but "as a man" to accept it, a position sufficiently significant as to the con- ceived relation of philosophy to theology in his age. (The mere " consistency," or want of " consistency," of such a position is perhaps best shown up by a reply made by the satirist Boccalini to this saying of Pomponatius : " It is necessary to absolve Pomponatius in so far as he is a man, but to burn him as a philosopher.") Pomponatius explains the " universality " of the belief in immortality as an effect wrought by priests in the interest of religion ; but he thinks the appeal to the future an unscientific one, since virtue should be its own reward. Pomponatius attempts to justify his dualistic philosophical attitude by means of a distinction between speculative and practical reason, the former of which (as well as the latter) belonging to the philosopher alone ; the latter (only) to men in general. If reason is thus absolutely dualistic, the position of Pomponatius was a natural, though an uncomfortable and compromising, one, as he himself seems to have felt. 12. (3) Ciceronians. The fact of a newly-arisen life of thought, as opposed to the dryness of the Scholastic under- standing, had, as a natural, though not, perhaps, a very profound, consequence, the coming into existence of a school of thinkers who hated and vehemently antagonized Scholastic logicism in general, its over-refinement, or false subtlety, and its barrenness. This is the school of the Ciceronians, Laurentius Valla, Rudolph Agricola, Lu- dovicus Vives, Marius Nizolius, Petrus Ramus, and others. Laurentius Valla (1407-1459) affirmed that "dialectic" 24 A HISTORY OF MODERN PHILOSOPHY. (logic) is merely an aid to rhetoric, which should be sub- stituted for it ; that virtue is really virtue only when sought for the sake of pleasure ; that human freedom and divine providence are merely matters of faith. Rudolph Agri- cola (1442-1485) combated Scholastic subtleties, and ad- vocated a philosophy of " common sense." The only rule of knowledge, he affirmed, is the rule of probability. Ethics is the principal part of philosophy. Our ultimate resort must be to Scripture. Vives (1492-1540) advo- cated humanism as opposed to Scholasticism, and the rule of probability as opposed to demonstration so called. The Nominalists and Realists, he thought, occupy sub- stantially the same ground. Of the soul we can know only the attributes and the operations, not the nature. The exis- tence of God is for us a moral need, not a theoretical cer- tainty. We must interrogate Nature : " only through direct investigation, by way of experiment, can Nature be known." Works of Vives are "De Prima Philosophia" (1531), " De Anima etVita" (1538). Marius Nizolius (1498-1575), likewise, opposed Scholasticism and advocated the substi- tution of rhetoric for metaphysics and dialectic, and the employment of empirical methods " induction " in the search for truth. A work of Nizolius, "De veris Principiis et vera Ratione philosophandi contra Pseudo- philosophos Libri quatuor" (1553), was reissued by Leib- nitz in the seventeenth century. Ramus (1517-1572) graduated from the Sorbonne, and (in 1551) received the appointment ot professor of philosophy and eloquence in the College de France. Violent opposition on his part to Scholasticism brought upon him theological odium, to which he fell a victim in the celebrated massacre of St. Bartholomew. Ramus's works number upwards of fifty : among them are " Aristotelicae Animadversiones " (1543), "Dialectics Partitiones" (1543), "Institutions Dialecticae" (1547), nearly the same as the one preceding. Ramus was a special student of the works of Cicero, Quintilian, Plato, and an avowed follower of Valla, Agricola. Nizolius, STOICS. SCEPTSCS. 2$ and Vives. He denounced the Aristotelian logic as arti- ficial, and without value for a real dialectic, and sought to merge logic into rhetoric. He laid stress upon the theory of judgment, which he viewed as also a theory of memory and its right use. There are, according to him, three stages of judgment : i. Syllogistic inference; 2. Combina- tion and arrangement into a self-consistent whole of propo- sitions of like kind and import (a process which involves some uncertainty in the result) ; 3. The reference of the scientific truth obtained by these forms of judgment to God, and the attempt to see God in all things, to the end that we may be incited to the praise of God. Ramus's im- provements ( ?) upon the old logic have (unfortunately) been largely followed by modern logicians. He had many fol- lowers, and excited much opposition ; and for a century or more, logicians as a class, throughout Europe, were divided into Ramists, Anti-Ramists, and Semi-Ramists, chief among the Anti-Ramists being a certain Antonius Goveanus, colleague of Ramus at Paris. In conclusion, it has to be remarked that the " Ciceronians " present traits which make them forerunners of Francis Bacon, generally regarded as the founder of modern empiricism. 13- (4) Stoics. As revivers of Stoicism may be mentioned Justus Lipsius, or Joost Lips (1547-1606), teacher in the universities of Leyden and Louvain, and author of works entitled " Manductio ad Stoicam Philosophiam " (1604) and " Physiologic Stoicorum Libri III." (1610) ; and Caspar Schoppe, or Scioppius (1576-1649), author of "Casparis Scioppii Elementa Stoicae Philosophic Moralis quae in Senecam, Ciceronem, Plutarchum, aliosque Scriptores Commentarii Loco esse possunt " (1608). 14. (5) Sceptics. Revivers of Scepticism were Michel de Montaigne (1533-1592), Pierre Le Charron (1541-1603), 26 A HISTORY OF MODERN PHILOSOPHY. Francois Sanchez (15521632). According to Montaigne, the true philosophy is, not to depend too much on philos- ophy. Human knowledge as such is bounded by the senses ; which are, obviously, unreliable guides to sub- stantial truth, since they are contradictory and variable in their reports. The more we learn, the more ignorant we become. Human reason must be supplemented by faith, acceptance of Revelation. The first virtue of man is sub- mission and obedience to God. The Scepticism of Mon- taigne did not (Erdmann thinks) include the ataraxy, or impassivity, of Pyrrho, but was rather a part of that general tendency towards the practical, as distinguished from the mediaeval, worldliness. For Montaigne's views, see Book I. Essay XII. of his celebrated Essays. Le Charron an advocate, theologian, famous pulpit orator, and friend of Montaigne teaches that knowledge comes, not through the senses, but from the inner depths of the soul, in " which are implanted the germs of science and virtue." The mere understanding is the source of all human evils. Human welfare depends on the will solely. To attain wisdom man must free himself from passion (which originates in the sensible region of the soul), must desire little, and that only which accords with nature, must hold his judgment always open for the reception of new light, since human knowledge is never more than a greater or less degree of probability. Le Charron's views are contained in a work entitled, "De la Sagesse " (1601, 2d edition 1604). Sanchez a graduate in medicine, a superintendent of an infirmary, teacher of medicine and philosophy combats Scholastic subtlety, preaches the vanity of human knowl- edge, and advocates a " Christian Philosophy." We can know nothing, since things are infinite in number, and even if they were numerically finite, their connections are infinite. So-called universals are creations of the fancy : only in- dividuals really exist. Through the senses we learn only of the accidents of things, not of their essence. By self-con- sciousness we apprehend merely mental phenomena, not IONICIST, EPICUREAN: GASSENDI. 2"J the essence of the soul itself, and these only imperfectly, since they are continually varying and without definite out- lines. Reflection, too, can give only confused and uncertain results. Our only recourse is " Christian faith." Works of Sanchez are "Tractatus de multum nobili et prima uni- versali Scientia, quod nihil scitur" (1581), his chief work ; " De Divinatione per Somnum ad Aristotelem : " " De Longitudine et Brevitate Vitae." In addition to the foregoing Sceptics, may be barely mentioned Francois de la Mothe le Vayer (1586-1672), Simon Foucher (1644-1696), Joseph Glanvil (died 1680), Hieronymus Hirnhaym (died 1679), Pierre Daniel Huet (1633-1721), and Pierre Bayle (1647-1706), author of the celebrated " Dictionnaire his- torique et critique " (1696). 15- (6) An lonicist. The early Ionic philosophy was revived by Claudius Berigard (15927-1663?), professor in Pisa and Padua, in a work entitled " Circuli Pisani seu de Veteri et Peripatetica Philosophia Dialogi" (1643). 16. (7) An Epicurean. Epicurean doctrines, blended with Christian theology, were taught by Pierre Gassendi (1592 1655). Gassendi took courses in the College of Digne and the University of Aix, and afterwards lectured in these institutions of learning. Later he was professor of mathe- matics in the College Royal. He entered the priesthood, and was at one time provost of the cathedral of Digne. Gassendi numbered among his friends some of the most eminent scientists of his age, among them Descartes and Galileo, was himself well informed in the early modern sciences, and may be regarded as a link between the first and second eras of modern philosophy. Philosophical works of Gassendi are, " Exercitationes paradoxicae adversus Aristoteleos " (1624), " De Vita, Moribus, et Doctrina Epicuri Libri octo " (1647), De Vita, Moribus, et Placitis Epicuri, 28 A HISTORY OF MODERN PHILOSOPHY. seu Animadversiones in X. Librum Diogenis Laertii " (1649), " Syntagma Philosophise Epicuri " (1649), the last- named being his principal work. He was the author of works in physical science possessing some value. At one time inclined towards the revived Aristotelianism, Gassendi was prevented from remaining an Aristotelian by the study of the natural sciences in their modern character. He sought reconciliation between " science and religion," and found it, as he thought, in a modified Epicureanism. Philosophy, according to Gassendi, is the pursuit of wisdom. Its parts are Physics (whose object is truth) and Ethics (whose object is virtue), Logic being merely propaedeutic to philosophy proper. The path of knowledge lies between scepticism and dogmatism. There are no innate ideas. All knowledge originates in sense-perception, from the data proceeding from which reason deduces causes and arrives at universal ideas. The first principle and matter of things is the atom. Atoms differ in magnitude, weight, and form. The number of atoms is not, as Epicurus taught, infinite, but finite : the same is true of the extent of space. Atoms are not eternal a parte ante, but were created by God; the world formed of atoms is not a product of chance, but a work of providence. The world and mankind were created to receive and manifest the goodness of God. All creation culminates in man, who alone is capable of leading the world or creation back to God. In all men there is a certain presentiment of a divine nature and a providence sustaining all things, a doctrine, we may observe, not quite consistent with the denial of " innate ideas." Man possesses both a material and a rational soul, having a joint seat in the brain ; the rational soul is not, as Epicurus taught, composed of minute fiery atoms, but is simple and immaterial, and immortal, since it possesses a knowledge of the supersensible and universal, etc. Freedom of will is indifference of choice, resulting from indifference in the understanding. The object, directly or indirectly, of all our effort is pleasure, or painlessness of body, and peace MELANCHTHON. 2p of soul : the virtues are merely safeguards against hindrances to pleasure or happiness. 17- II. THE ASSOCIATION OF PHILOSOPHY WITH (PROTESTANT) THEOLOGY. Next after the revivals of ancient systems of thought, and before the first original and independent efforts coincident in time with them, we may consider the efforts of philosophical thought in the service of and at the same time aided by the at least would-be free spirit of the Protes- tant religion. Protestantism, a religion of " faith," felt the need of a certain basis in " reason." The chief Protestant, Martin Luther, abhorred philosophy, whether Scholastic or ancient ; but Melanchthon, the associate leader of the Protestant movement, was clearly convinced that without positive method and dogma, as educational instrumentalities, Protestantism as a practical movement must succumb to confusion, to want of organization ; and he taught and wrote energetically and thoroughly in accordance with this conviction. Besides Melanchthon, have to be treated in the present connection Nicolaus Taurellus, and the so- called " Mystics " Sebastian Franck, Valentin Weigel, and Jacob Boehme. For distinction's sake, we may style Melanchthon and Taurellus Semi-Rationalists. 18. (i) Philip Melanchthon (1497-1560), the "teacher of the whole German world in philosophy, as well as in the- ology," was educated at the Academy of Pfortzheim and at the Universities of Heidelberg and Tubingen, at which lat- ter university he studied law, medicine, and theology. Bril- liant scholarship secured for him, soon after graduation, a professorship in Greek in the University of Wittenberg. Here he taught in the spirit of the Renaissance, and especial- ly labored to make Greek philosophy a source of advantage to Protestantism. As a teacher of Greek he awakened the admiration of Luther, and became associated with him in 30 A If IS TORY OF MODERN PHILOSOPHY, the revision of his translation of the Bible and the carrying on of the Reformation so-called, his objective intellectual equanimity and conservatism supplementing the subjective moral intensity and radicalism of Luther. He has been called the scribe of the Reformation, as having drafted " most of the public documents " of the " Reformers." Works. Melanchthon's philosophical works (mostly text- books) are, " Dialecticae Libri IV." (1520), " De Anima " (1520), " Initiae Doctrinae Physicae" (1547), "Epitome Philosophise Moralis" (1538), " Ethicae Doc- trinae Elementa" (1550), and " Declamationes " (1544- 1586), which consists of discourses on ancient philosophy, the practical value of philosophy, etc. Philosophy. Melanchthon taught a somewhat modified Aristoteliarrism. He seems to have adopted in full the Aristotelian logic, adding to it certain principles borrowed from Cicero and Christian theology, as that the sources and criteria of knowledge are, besides logical inference, univer- sal experience, or consensus gentium, innate ideas, and the truths of Revelation. With a perceptible leaning, in meta- physics, towards Plato (with whom, however, he regarded Aristotle as in substantial accord), he adopted the Aristo- telian physics (except as to the doctrine of the eternity of the world), the Aristotelian psychology (except as to the doctrine of the future life), and the Aristotelian Ethics, Christianized somewhat. In Melanchthon's Christianized Aristotelian Ethics, the moral law is God's will ; virtue is the knowledge of God and obedience to him ; Revelation (the Decalogue in particular) the highest statement of moral truth ; natural right comprises innate universal prin- ciples (together with their consequences), and is based, as " regards duties to God, upon the dependence of creature on the Creator, as regards duties to fellow-men, upon the necessity of human society; " positive right consists of the enactments, depending on circumstances, of civil authority ; civil authority is directly of and from God ; the state, though not to be ecclesiastically ruled, must cherish religion, TAURELLUS. 31 enact no laws contrary to the divine commandments, and be subject to the condition that religious necessity may make it right that the citizen resist authority, and even, in case of tyranny, murder the civil ruler. It has been maintained, apparently with perfect justice, that except in the depart- ments of natural and civil law, Melanchthon's philosophy was entirely borrowed ; that by his " substitution of the Bible for canon law" he helped to promote the evolution of the philosophy of law. 1 19. Nicolaus Taurellus (1547-1606). Taurellus studied theology and philosophy at the University of Tubingen, and took the degree of doctor of medicine at the University of Basel. He was successively physician to the Duke of Wiirtemburg, professor of philosophy and medicine at Basel, and professor in the same sciences at Altdorf. Works. Works of Taurellus are " Philosophise Tri- umphus, seu metaphysica philosophandi Methodus " (1573), " Synopsis Aristotelis Metaphysices ad Normam Christiana? Religionis Explicatse, Emendatse et Complete" (1596), " Cosmologia " (1603), " De Rerum ^Eternitate " (1604), etc. Philosophy. Taurellus seeks to " free philosophy from the fetters of (Scholastic) Aristotelianism and to bring it into harmony with the fundamental doctrines of Chris- tianity." Philosophy is a propaedeutic or intellectual prepa- ration for theology : it shows men their spiritual ignorance, and points the way to that which alone is capable of satisfy- ing their spiritual needs. It is that " knowledge of things human and divine which we obtain by the inborn power of thought," a power which is the " same in all men, and subsists without increase or diminution ; " it is knowledge through conceptions, which are " not something coming to us from without, but produced by us from within." It is 1 See Erdmann, 232, 3. 32 A HISTORY OF- MODERN PHILOSOPHY. concerned with necessary and eternal truths. " General notions " are abstractions from individual things, which alone are real. Everything has a cause, and at the head of all causes is a First Cause, God. In his pure essence. God is mere causa sui, not the cause of anything else. Every cause is more perfect than its effect; and the activity of God in going out of himself becomes less than perfect, /. e., becomes finite. Hence the world is finite, and must have had a beginning. The like holds of matter. The eternal as such is unchangeable, and from it no world of atoms could have been formed : the created world must have been formed from nothingness. Further, infinite power needs no such thing as matter for the bringing forth of finite things. Though philosophy discovers necessary and eternal truths, it cannot attain to the knowledge of the will of God; hence the necessity of a revelation for man. But of the truths commonly supposed to be merely revealed truths, some e. g. those of the resurrection and the Trinity are philo- sophically necessary. 1 20. (2) Sebastian Franck (1500-1545). Franck studied at Heidelberg, and afterwards became a historical writer of eminence. He had a profound acquaintance with the works of the German Mystics of the fourteenth century. Works of Franck are "Paradoxa" (1542), " De Arbore Scientiae BonietMali" (1561). According to Franck, God is the only good. He created things, not at any particular time and once for all, but eternally creates and sustains. Apart from him, things are nothing : he is in everything, and constitutes the being of everything. Man is free in will, though limited in act. He is truly himself when he wills God : otherwise he is nothing. All men are one man. In every man both Adam and Christ exist, and redemption is not something that began to be just fifteen hundred years ago. He who is dead to his individual self and serves his spiritual 1 See Erdmann, 239, 14. WEIGEL. BOEHME. 3 3 self or God, is a Christian a member of the Holy Church even though he never believed on Christ. Franck was by the Lutherans persecuted for his philosophical opinions. 1 21. Valentin Weigel ( 1 533-1 588). Weigel, after many years of study at the universities of Leipsic and Wittenberg, spent his life as pastor of a church at Zschopau. By discreet- ness he escaped Franck's fate. He was a follower of Franck and the German Mystics. Works of Weigel are, "Studium Universale, TVW&L o-eavroV (Know thyself), " Kurzer Bericht vom Wege und Weise, alle Dingen zu erkennen " (Brief Description of the Way and Method of Learning all Things) , " Christliches Gesprach vom wahren Christenthum." True wisdom has its foundation in self- knowledge, knowledge of our origin and destiny. Man is the microcosm : in him are united soul, spirit, and body, originating respectively in the divine, the celestial (sethe- real), and the earthly worlds. By his soul (only) he is an image of God, and is immortal. He apprehends God directly : he cognizes the world, the macrocosm, through the elements of it united in himself. The object of knowl- edge is the occasion but not the cause of our knowledge : we know and understand only what we ourselves are. God is one and self-sufficient : man is dependent, and contains in himself alterity, has self- existence not of necessity, but by grace or favor. True Christianity, true resurrection and consciousness of God, are contained in " death to self." a 22. Jacob Boehme* (1575-1624), the " Gorlitz Shoemaker," a native of Upper Lusatia, attended a village school, and was then apprenticed to a shoemaker. For many years he was an industrious maker of shoes, and gloves in the town 1 See Erdmann, 233. 2 Erdmanr. 234, 4-6. 8 Zeller, Hegel, etc. VOL. i. 3 34 A HISTORY OF MODERN PHILOSOPHY. of Gorlitz. He was a constant reader of the Bible, the works of the Mystics, and astrological works. He experi- enced in youth supernatural visions and ecstatic conditions of mind, and in later years passed through inner mystical struggles. His peculiar views brought upon him charges of heresy, and made him an object of inveterate hatred to the clergy in his neighborhood. Works. Of Boehme's works (16121624), about twenty in all, the following-named are among the most important: "Aurora," "Vom dreifachen Leben des Men- schen" (Threefold Life of Man), "Signatura Rerum," "Von der Gnadenwahl " (Election by Grace), " Myste- rium Magnum." Boehme's works, both by their content (which is strongly mystical) and their form (which is very highly figurative), have been universally found difficult to comprehend, and even more difficult to expound. Philosophy. Boehme is a naturalistic theosophist. In its physics, his doctrine is Paracelsian (see below, p. 37) ; in its metaphysics, Neo-Platonic. He divides speculation into three branches : philosophy, treating of God and the origin of the heavens and the elements ; astrology, treating of the origin of all mundane things, from the stars and the elements ; and theology, which treats of the " Kingdom of Christ." Boehme attempts to refer all things to their source in such a manner that the greatest contrarieties even shall be comprehended in a single principle. All things have their source in God, and, conversely, all things are, without giving up their being, contained in God ; the dis- tinction between God and Nature (including man) is one that is in some manner eternally in God himself, for only so is God all in all. The distinction exists that God may mani- fest himself, and so be a true, perfect God. Apart from this distinction, God is pure groundless unity, eternal still- ness, eternal nothing. If God were only this unity, this stillness, this nothingness, any distinction would be a sep- aration from God without a return to him, and he would not be the All. There is both a "Yes" and a " No" in NATURAL PHILOSOPHERS. 35 all things, by which they subsist. The primary physical elements are " light " and " wrath," which are antagonistic forms of the same thing, " heat." Light is lovely, and the universal cause of life ; wrath burns, consumes, de- stroys. The constant war of light and wrath is at once the source and offspring of "quality," spirit. In God are seven primal qualities or spirits. Of these, six were begotten by and are embraced in the seventh, which is the divine nature, " mysterium magnum." In itself, the mysterium magnum is a world of pure light, harmony, and joy ; unfolded, it becomes the world of both good and evil. Hence, evil as well as good is from God, and is of his essence, appertains to the property of generation neces- sarily contained in God. The evil in every creature is that inherent individual self-will which opposes itself to the universal will. The fall of man was a division, which took place in the slumber of selfishness, of his originally sexless nature into the two sexes. The redemption of man is through the divine light manifest in Christ. Boehme is commonly known as the philosophus Teutonicus (the Ger- man philosopher par excellence}. He has had a very marked influence in later German thought, particularly in the systems of Schelling, Baader, and Hegel. 23. III. THE (RELATIVELY) INDEPENDENT CULTIVATION OF PHILOSOPHY AS SUCH. Here occur (i) Natural Philoso- phers; (2) Ethical (chiefly Political) Philosophers. 24. ( i ) Natural Philosophers. As the most important of the natural philosophers may be named : Nicolaus Cusanus, Theophrastus Bombastus Paracelsus, Hieronymus Cardanus, Bernardinus Telesius, Franciscus Patritius, Thomas Cam- panella, Ucilio Vanini, Giordano Bruno. 36 A HISTORY OF MODERN PHILOSOPHY. 25. Nicolaus Cusanus (1401-1464). Nicolas of Cusa took a doctor's degree in law in the University of Padua, but instead of practising law, entered the Church. In 1448 he was appointed to a cardinalship, and two years hter was made bishop (of Brixen), having performed important services as church-official. In the midst of ecclesiastical duties he carried on mathematical and astro- nomical studies, in which he was at least a century beyond his age, having even anticipated Copernicus in important regards. Works. The chief work of Nicolas is entitled "De docta Ignorantia" (1440). Other works are "De Con- jecturis " (supplementary to the foregoing), "De Visione Dei," "De Ludo Globi," "De Beryllo." Philosophy. All human knowledge is, as such, mere " conjecture ; " human learning is " learned ignorance ; " and our highest knowledge is the knowing that we do not know. Tnie knowledge knowledge of God we have only by an intellectual intuition, a vision of God. God is the content or substance of all things, the unity of all opposi- tions : in him absolute motion and absolute rest, the infinitely great and the infinitely little, reality and possi- bility, matter and form, subject and object, are one and the same. The universe is (not God himself, but) the explication, unfolding, external ization of God's nature. All things fol- low mathematically from the divine unity, and form together a cosmos governed by mathematical relations. The physi- cal universe is infinite in time and space ; the earth rotates on its axis. The destiny of man is to be united with God, by faith in the God-man, Christ. The ideas of Nicolas, through their direct influence upon Bruno, and their in- direct influence on Spinoza, Leibnitz, and others, have been a very considerable factor in modern philosophy. Particularly original and modern in Nicolas is the idea of the infinitude of the universe, on account of which chiefly PARACELSUS. 37 is he to be classed with modern rather than with (early) mediaeval philosophers. 26. Theophrastus Bombastus Paracelsus ! ( 1493-1541 ) . Paracelsus, who was educated by his father and at several universities, spent a considerable portion of his life roving about the countries of Europe, seeking a knowledge of the world in general and medicine in particular. He had already studied medicine under his father and other in- structors. In 1526 he was appointed professor of medicine in the University of Basel. He is reported to have opened his first course of lectures by burning the works of Galen and Avicenna, to symbolize his conception of the duty of investigators as regards independence of the past and the direct study of nature and life. He attempted to intro- duce a reform in the art of medicine upon the basis of a philosophical knowledge of human nature as a whole. Works. Works of Paracelsus are " Paramirum seu de Medica Industria," " Paragranum " (or the " Four Pillars of Medicine"), " Labyrinthus Medicorum et de Tartaro," " Pestilitate ex Influxu Siderum," etc. Philosophy. Philosophy has for its only subject nature, and is itself merely " invisible nature." Its instrument is the natural light of the mind, reason. Nature is to be comprehended only through the knowledge of its end, man, who is (therefore) the " book from which we may read the secrets of nature," the microcosm. Man is com- posed of an earthly body, which is tangible, a heavenly or astral body, which is aether-like in nature, and a " spirit," and a soul, which is purely of divine origin and destiny. The first of the three parts of man is nourished from the mate- rial elements (fire, air, earth, water), the second from the influences of the stars, the third from Christ through faith. The material elements are formed from salt, sulphur, and quicksilver, which in turn come from a primal matter 1 Zeller, Geschichte der deutschen Philosophic. 38 A HISTORY OF MODERN PHILOSOPHY. (termed by Paracelsus mysterium magnum}, which is not so much corporeal as incorporeal in nature. The essence of material things is force rather than matter. There is a universal life, each thing's peculiar share of which is its quintessence (/. returning to France occasionally on business or to receive honors bestowed upon him for scientific achievement. His studies were chiefly in physical " philosophy ; " he read little, despised history, politics, learning, and art, studied anatomy and chemistry in the laboratory in search of a medical doctrine based on absolute demonstration, and pur- sued astronomical and meteorological inquiries, all with 92 A HISTORY OF MODERN PHILOSOPHY, the purpose of carrying the physical explanation of phe- nomena as far as possible, and, to a considerable extent, as it would seem, in the spirit of Baconian empiricism, for which he seems to have had a certain admiration notwith- standing his very decided mathematical predilections. But in spite of his scientific independence, he preserved a certain respect for Church doctrines and awe of Church authority, since he feared to run the risk, by publishing his scientifico- philosophical works, of being accused of heresy, and took care to soften certain features of his physical doctrines that contravened established theological tenets. He did not, however, escape all odium theologicum ; he was charged with atheism and infidelity by the universities of Leyden and Utrecht. In the year 1649 ^ e accepted (reluctantly) the urgent and often-repeated invitation of Queen Christina of Sweden to come to her capital and reside, instruct her in philosophy, and found an academy of sciences. Change of climate and of mode of living, occasioning serious abridgment of the individual freedom he had always sought and cherished, resulted in his death, in 1650. From the foregoing biographical sketch it clearly appears that Des- cartes was personally a true child of the Renaissance, disdainful of the past, restless, intense, sanguine, egoistic. His philosophy corresponds closely with his character. Works. The principal philosophical works of Descartes are: "Discours de la Mthode " (1637), " Meditationes de Prima Philosophise" (1641), " Principia Philosophise " (1644), containing his physics, "Traite' des Passions de I'Ame" (1649). Philosophy of Descartes: Standpoint and Method. The philosophy of Descartes has as its starting-point a definite conception of truth as union of knower and known object in intellect, as distinguished from sense, imagination, and memory. Truth, Descartes holds, presents itself only in those clear and distinct (as opposed to obscure and con- fused) ideas which intellect alone is capable of. In full keeping with his mental history as we have sketched it, DESCARTES. 93 Descartes affirms that the precondition to, the attainment of truth is thorough-going doubt. Not doubt merely for its own sake, however ; scepticism is only a means to an end, a moment or element of method, not the goal of thought. And it must be remembered, of course, that the principle of universal doubt has application in theoretical matters only ; in matters pertaining to conduct, says Descartes, we must follow as principle that which is merely probable. Now it is, in the first instance, easy to doubt all forms of so-called knowledge, except mathematics. Mathematics, therefore, suggests, if it does not immediately contain, the ideal of scientific method ; it is not merely formal, like the old logic, not merely the rule of the operation of a cer- tain subjective faculty, but is^j^jgethod^of arriving at objective truth of fact; and it possesses the highest degree of certainty. But the melnod sought must be absolutely universal, which majjieiatics is not. It has four elementary principles, which in their relation to one another are but' steps in a single process, whose unity corresponds to the nature of truth itself. These principles or steps are as fol- lows : (i) Never receive as true anything not certainly known to be such ; avoid prejudice and precipitancy in judgment, and embrace nothing except that which presents itself so clearly and distinctly to the mind that there is no room for doubt about it; (2) Analyze every problem into as many parts as possible and as may best facilitate its solu- tion ; (3) Think in an orderly manner, commencing with objects that are the simplest and easiest to understand, and ascending by degrees to the knowledge of the most com- plex, assuming the same order among those which do not naturally have the precedence one over the other ; (4) Make everywhere enumerations so complete and reviews so com- prehensive as to be assured of having omitted nothing. Descartes, it is true, gives this as merely the method which he had resolved upon to assure himself personally of rising out of the region of confused, obscure, and, hence, doubtful things into that of clear and distinct truth ; but he asserts, 94 A HISTORY OF MODERN PHILOSOPHY. nevertheless, that diversity of opinion results not so much from differences in minds as in methods of using them ; that truth is the same for all minds following the true method ; and, furthermore, the method of analysis and synthesis embodied in his four principles is, as we shall see, quite in harmony with the physico-mechanical char- acter of his doctrines. 1 Metaphysics : The First Principle, " Cogito, ergo sum." If the truth is that only which is absolutely certain, which is perfectly clear and distinct to the mind, it would appear, at first, at least, that nothing whatever can be received as true. The presentations of the senses, of memory, of imagi- nation, may all easily be questioned, may be treated as dreams, mere hallucinations, the machinations, say, of some omnipotent deceiver : they are, if believed in, mere pre- judices and presuppositions, which have to be got rid of. 2 But there is one prejudice that I cannot rid myself of: I think, and (therefore) I am. However questionable all my ideas considered as representations of fact, it is not at all questionable that / have them : I could not be deceived if I did not have them, did not think (in the broad sense of the term), and hence did not exist. If it be said that I am deceived in thinking that I exist, I reply that I cannot here make a distinction between my existing and my think- ing that I exist. I can not with such certainty say, " I walk, therefore I exist," because it is not absolutely certain to the understanding however it may be to sense that I do walk. My existence and my thinking are to understanding inseparable ; walking and my existence are not thus insep- arable. 8 The reasoning of Cogito, ergo sum, is not purely syllogistic. There is not wanting a premise to complete my thought, as the premise, Whatever thinks exists. I imme- diately perceive intellectually my existence as a thinking being. Further, I perceive that I exist as thinking. I do not as yet perceive anything beyond that ; * my doubt and 1 Discours de la M^thode. 2 First Meditation. 8 Second Meditation. * Ibid. DESCARTES. 95 those creations of my imagination, the truth of which I can easily doubt, prove only that I exist as thinking. This principle, Cogito, ergo sum, is, then, the first material prin- ciple of philosophy; it is the foundation and criterion of all truth, and may fitly be compared to the single fixed point Archimedes required (but could not get) to move the whole world with his lever. In the intellectual perception of myself I have that feeling of certainty and that clearness and distinctness of idea which gives to mathematical truth its almost supreme value as regards method. All other ideas are true in so far as they possess the clearness and distinctness of this. In fine, whatever assertion I make concerning the existence of other beings than myself in- volves, as its support, the assertion of my own existence, and is to be judged by comparison with my assertion as to my own existence. 1 The Knowledge of other Existences than Self: (i) God. Now with regard to the existence of other beings than myself there is a possibility of my being deceived. To resolve the doubt here I am obliged to determine whether or not there be a God, and, if there is, whether or not he can be a deceiver. Where do I get the idea of a God, and what truth is there in it ? Of all my ideas, I find some that have come from without, as those of sensible existences, others that are created purely by myself, such as those of a winged horse or a siren, and others still that neither come from without nor are created by myself, and must therefore be, as it were, innate ; for example, the idea of truth, thing, thought, an infinite being. Thatjhe_idea of an infinite being does noL^come to me from without, is seil-.evident : that^it ha&-not been produced by me may be argue.cLfrom the fact that an effect can in no case be greater than its cause; e.g., the perfectj:ajinot in any-wayilte-an -effect of the Jrnrjerfect. I can easily produce, by abstraction, the idea of the indefinite ; but not the positive idea of infinite perfection, for I am imperfect. The source of such an idea 1 See Second Meditation. 96 A JUS TORY OF MODERN PHILOSOPHY. can, originally, bejanly a being that is infinite in nature, /. e., God ; therefore the^ j'Hpa m\\^ havp bp^n impbntpd. in me by him, he must exist. I know that God exists also from the fact of my own existence ; if I had been the author of my own being, I should have given myself all possible perfection, and I must attribute my continued existence as well as my creation to a God. 1 Further, the existence of God may and must be inferred from the very idea of the infinite. It is as impossible for me to conceive the idea of infinite perfection without that of existence as it is to con- ceive a triangle the sum of whose angles is not two right angles, or to conceive a mountain without a corresponding valley. I have, in other words, a distinct and clear percep- tion of existence as a necessary attribute of an infinitely perfect nature. I can, it is true, separate in thought the idea of a finite thing and the existence of that finite thing ; but the idea of the infinite would be self-contradictory and impossible to me if it did not include that of God's exist- ence. 2 This proof of the existence of God, which resem- bles that of Ansejm, is distinguished from the Anselmic proof as follows : Anselm infers the existence of God purely from the necessary implication of the idea of the perfect being; I rather from the clearness and distinction with which the necessary connection between infinitude and existence is perceived by the understanding. 8 Existence of the External World. Now, it is utterly impossible that God, a being of infinite perfection, can wish to deceive me. I know, therefore, that whatever I can clearly and distinctly conceive as existing does really exist, just as I know that God exists from the clear and distinct conception of him. I clearly and distinctly con- ,oJ ceive the external world as existing, (ergo) it really exists. v Substances. Among my ideas are ideas of things that are clearly and distinctly conceivable in and by themselves, and ideas of others that are not so conceivable. I can, i Third Meditation. 2 Fifth Meditation. 8 Fifth Meditation. DESCARTES. gy , for example, clearly and distinctly conceive myself as a purely intellective being, as complete without the faculties of feeling and imagination ; but I cannot conceive imagina- tion and feeling as existent without me or some intelligent nature to which they belong ; nor can I conceive the power of changing place and taking various situations without a certain nature to which it belongs. Things which are thus conceivable in themselves are siibstances ; things not thus conceivable are attributes or are modes. There are three substances : God, ourselves, and external nature. Ourselves we know as thinking substance, God we know also as thinking substance and as author of ourselves and external nature, and nature we know, from the veracity of God, as extended substance. Primarily, God alone is substance, since we and nature depend on him ; we and nature are secondary substances, having the attributes re- spectively of thought and extension. Nature. According to his view of substance, Descartes could not conceive nature as really distinct from God ; nor did he, except for purposes of mere explanation. And for purposes of explanation he finds it necessary, in accord- ance with his mathematical method of knowledge, to treat of nature as mere extension and motion. The conception of force or power he expressly terms non-physical, power belongs to God alone ; and he excludes all inter- pretation of nature by the doctrine of final causes. Abso- lutely^considered, nature is to Descartes eternal ; and yet he finds it necessary for explanation's sake, and con- venient for theology's sake, to treat nature as having a cer- tain origin from material elements and motion. Extension is without limitation of any nature ; hence there are no fixecl atoms and no vacuum. Original matter (extension) is divided into innumerable undifferentiated parts set and kept in motion by the power of God. From the collision of the parts of moving matter there results a differentia- tion of matter into three sorts: (i) "first matter," com- prising innumerable fine particles, materia subtilissima, VOL. i. 7 0)8 A HISTORY OF MODERN PHILOSOPHY. composing the sun and fixed stars, and producing heat by their motions ; (2) "second matter," less subtile but very fine, composing the heavens and producing light by its motion; (3) a sort comprising larger particles and com- posing the planets, etc. [The motion of matter is in no case produced by action at a distance, but by pushing of portions of matter by others, in particular, by the finest of the differentiated material elements, or " first matter." By a rotatory motion caused by collision of particles vor- tices are produced in ^matter, and bodies and systems of bodies are evolved throughout space. The sum of mo- tion in the universe is constant. The earth does not move of itself about the sun, but is carried about in a vortex (says Descartes, steering carefully between the Scylla of Catholicism and the Charybdis of Science) . Organic bodies, like inorganic, are explicable on purely mechanical prin- ciples. " If we possessed a thorough knowledge of all the parts of the seed of any species of animal (e.g., man), we could from that alone, by reasoning entirely mathematical and certain, deduce the whole figure and conformation of each of its members, and, conversely, if we knew the several peculiarities of this conformation, we could deduce from these the nature of the seed." 1 Animals are in fact mere__autQniatic machines. Life in plants is due merely to motion anoT brHer^ of~parTs : Hfe~~tTr animals is due tojnotion or circulation of blood, whTch in^turrTls- due merely__tp__changes ot temperature. By a separation of particles in the brain are generated animal spirits, which are conducted by the nerves to and from sense-organs, muscles, and brain, giving rise to sensuous impressions and movements of muscles, etc. The pineal gland, in the centre of the brain and single in nature, is the seat of the soul. The Soul. As animals are mere automata, having no souls, so man has but the one rational soul, without the ani- mal and vegetable souls, of the ancient theorists. Of this 1 Encyclopaedia Britannica, vol. vii., art. Descartes. DESCARTES. 99 soul we have, as already seen, a clear and distinct idea in perfect abstraction. We perceive the soul to be simple, unextended, or immaterial, and hence imperishable, except it be destroyed by direct act of its creator. The acts of the soul as such are either ideas or volitions, the former being as acts relatively passive, the latter positively active. As to origin, our ideas are, as we have seen, innate, or impressed upon us from without, or made by ourselves. With regard to their truth, they may be classed as adequate and inadequate. ( Error in our ideas is a consequence of the incommensurateness of intellect, which is necessary in its action because determined by the nature of necessary being, and will, which is free : by act of will we may in judging receive and approve that which understanding does not clearly and distinctly apprehend. Innate ideas are, by virtue .of their necessary origin in God, not thus subject to error./ While the ideas of the intellect are clear and distinct, because innate, those of sense and imagination are obscure and confused, because they have a material origin : they are occasioned, though, since body and soul are distinct and disparate substances, not directly pro- duced, by the changes in the animal spirits occurring in the brain. (And as the body does not directly act upon the soul, so the soul does not in acts of volition work directly upon the body : it merely gives direction to the vital spirits in the conarium, or pineal gland, as the rider directs the movements of the horse, j More directly dependent upon the association of body a'nd soul than ideas and volitions are the passions which are involved in certain tendencies of the vital spirits, some more practical, and others more theoretical. Of the passions, six are primary : wonder, love, hate, desire, sorrow, and joy. The passions are con- trolled through the influence of ideas upon the animal spirits. In the control of the passions lies the essence of moral activity. By firm and definite judgments regard- ing good and evil we rise superior to passion and experi- ence ; the highest of all pleasures is the pleasure of rational activity. IOO A HISTORY OF MODERN PHILOSOPHY. God. The union of body and soul, upon which the lower mental operations so closely depend, requires the immediate concourse of God with, or his presence to, both body and soul. God is perfect, necessary intelligence. His intelligence, however, and all else that exists, depend upon his free and arbitrary will. Result. The system of Descartes ends in dualism (of thought and extension, mind and matter), or at least a monism which is merely formal or mechanical : God is, after all, but a Deus ex machina in this system. Descartes states the problem of philosophy (from the point of view of self-consciousness as such), and makes clear the terms of it ; but leaves these imperfectly synthesized, and the problem not completely solved. It becomes the endeavor of certain men nearly contemporary with Descartes to complete the solution. The question is, How shall the secondary substances be conceived in relation to one another and the primary substance ; how shall mind and matter be conceived as related to one another and God? It is scarcely necessary to say that as Bacon is the initiator of the empirico-realistic tendency of the second period of modern thought, Descartes is the inaugurator of the rationalistico-idealistic tendency. 49- Arnold Geulincx* (1625-1669). Geulincx, born at An- twerp, took a degree in medicine and, perhaps, philosophy in the University of Louvain, and was afterwards for twelve years lecturer there. Exciting hostility by attacks on Scho- lasticism, he was compelled to leave Louvain. He went to Leyden and became a private lecturer in the university at that place. At one time he underwent extreme poverty, and would have died but for the assistance of a (Cartesian) friend, Heidanus by name. Works. " Saturnalia, seu Qusestiones quodlibeticse in 1 See Fischer, vol. i. (trans.). GEULINCX. 101 utramque Partem disputatse " (1660); "Logica Funda- mentis suis, a quibus hactenus collapsa fuerat restituta " (1662); " TvSidi a-eavTov sive Ethica " (1665), his most important work; "Physica Vera" (1680); "Meta- physica Vera et Mentem Peripateticam " (1691); "An- notata praecurrentia " (1690) ; "Annotata majora in Prin- cipia Renati Descartes" (1691). Philosophy. Philosophy is divided into Metaphysics, Anthropology, and Ethics. Metaphysics is the doctrine of self, of body, and of God : Autology, Somatology, and Theol- ogy. Self-certainty is the basis of all knowledge. Cogito, ergo sum : " My activity coincides with my consciousness ; " thought or will of which I am not conscious is not my thought or will. The self is simple. It is united to a body, which is composite in nature. The two are disparate, and cannot act upon one another. Their union is a miraculous one, and depends upon a power above body and soul, namely, God. He is the cause of motions in body and of sensa- tions in me through these motions. As such he must be conceived as omnipotent will and thought. In relation to all other things " he is active, they are passive ; he inde- pendent, they dependent ; he is the absolute being ; cause of himself, unlimited, perfect, necessary, eternal," etc. "Geulincx," says Fischer, "wavered between the theo- logical and the naturalistic conception of the relation of finite minds to God. He regarded finite minds as creatures (mentes, create, particulars, limitata), and at the same time as modes of God (aliquid mentis) " Conduct is the harmony of will and thought. The (four) cardinal virtues are diligence, obedience, justice, humility. " We must first perceive the voice of reason by making a careful study of ourselves, then obey it by doing what it commands, and, finally, make this obedience the guiding principle of our conduct, the constant rule of our lives. Thence the fourth and highest duty naturally follows : we must pretend to be nothing except what we in truth are, instruments in the hands of God." Humility includes, on the one hand, 102 A HISTORY OF MODERN PHILOSOPHY. Despectio sui, and, on the other, Amor Dei ac The doctrine of which Geulincx is the real founder that the acts of body and of soul in their interrelation are merely occasions upon which supervene the causative operation of God, is known as Occasionalism. 5- Nicolas Malebranche* (1638-1715). Nicolas Male- branche, son of the secretary to Louis XIII. of France, received a classical training at home (because of a feeble constitution), studied philosophy at the College de la Marche, and theology in the Sorbonne. He joined the Congregation of the Oratory, and took up the study of Church history and Biblical Criticism. He did not become satisfied and settled in thought until after the accidental reading, in 1664, of Descartes' "Traite de 1'Homme," which determined him to philosophy forever. After ten years of reflection he pub- lished his (first and chief) work, " De la Recherche de la Verit^, ou Ton traite de la Nature de 1'Esprit de 1'Homme et de 1'Usage qu'il en doit faire pour eViter 1'Erreur dans les Sciences." This occasioned controversy, in which, with others, Locke and Leibnitz took part, and was followed at intervals by other works, mostly theological in matter and aim. Besides theology and metaphysics, mathematics and physics also engaged his thought. His death is said to have been the consequence of an illness caused by a con- troversy with Bishop Berkeley in a personal interview. Works. Other works of Malebranche, besides the chief work above mentioned, are : " Conversations Chre- tiennes " (1676, etc.); "Trait de la Nature et de la Grace " (1680) ; "Meditations Chretiennes et Me'taphysi- que" (1683) ; "Traite de la Morale" (1684) ; "Entre- tiens sur la Melaphysique et la Religion" (1688). 1 See Kuno Fischer's History of Modern Philosophy, vol. i. (trans. by J. P. Gordy.) 2 See ibid.' MALEBRANCHE. 103 Philosophy. Adopting the distinctions laid down by Descartes as to the faculties and the method of cognition, the relations of extension and thought, or mind and body, and God, as comprehending in himself pure thought and pure extension, Malebranche, under the general influence of his theological prepossessions, came to the, with him, cardinal position that we see all things in God, i.e., we have knowledge of the true nature of existences by partici- pation in God's knowledge of them. God's knowledge is a knowledge through pure ideas, or archetypes, of which he is the " place," as space is the place of sensible objects. The knowledge we have by this participation is rational or scientific, /. e., geometrical knowledge. Our knowledge of the merely sensible aspect of things is confused and uncer- tain, and it is knowledge by things in their relations to us rather than of things in themselves. Our knowledge of our individual selves is, likewise, confused and uncertain : it is merely a matter of feeling or inner experience. Our knowl- edge of others is purely conjectural. What we and others are in ourselves and themselves is known to God (and per- haps also to spirits). (Descartes had declared the knowl- edge of ourselves to be the most certain of all knowledge.) Our knowledge of God as spirit depends on immediate illu- mination by him. Body as apprehended through ideas is mere (intelligible or non-sensible) extension. Real indi- vidual bodies are "modifications" or "participations," i.e., specifications or limitations, of this extension produced by God through motion. Force does not appertain to body as such, but to God ; and bodies moving or communicating motion do so only by God's presence and influence. Motion as originating with God is simple and unchangeable in its laws. As the ultimate essence of body is extension, so that of mind is thought, and differences of mind are a conse- quence of inclination or will, which is therefore related to mind in its essence as motion is related to extension. Will as such depends on God, and is his love : and, since he is source and end of all things, it is his love toward himself. IO4 A HISTORY OF MODERN PHILOSOPHY. Particular will depends on relation of body and soul. This relation is founded on God : external objects are merely the occasion of ideas in us ; our will is merely the occasion of our bodily movements : God alone produces ideas and movements. Instrumental in the reciprocal relation of body and soul are the passions, whose ultimate source is love, and whose end is the liberation of the soul from the constant care of the body. They are good or evil accord- ing to the nature of that which is their exciting cause, or their object. Enlightenment is the precondition to freedom from error through the passions. Our destiny is to live, through knowledge and love, in union with God, who is himself eternal wisdom and love. Result. In the system of Malebranche Cartesianism approaches more nearly than hitherto a monistic (substan- tialistic) standpoint. The secondary substances, thought and extension, are in real subordination to the primary, God. There is an assimilation to one another of opposed terms through the conception of God as Replace of "ideas," as space is the place of sensible objects. This assimilation is an assimilation of thought to extension (rather than the opposite), and the system of Malebranche, though by its theory of knowledge of a theological cast, is by virtue of this peculiar character of the assimilation it contains, naturalistic also : it in fact (as Fischer suggests) borders upon the .naturalistic pantheism of Spinoza, whom we have next to consider. 51- Baruch de Spinoza 1 (1632-1677). Spinoza, descend- ed from a family of Spanish Jews that had fled to Hol- land to escape persecution, was born in Amsterdam. His education was conducted by a Talmudist, Saul Levi 1 Spinoza's Works; Kuno Fischer's Geschichte der neuern Phi- losophic; Spinoza, a Study, by James Martineau ; Ueber die beiden ersten Phasen des Spinozistischen Pantheismus, von Richard Ave- narius; Noack ; etc. SPINOZA. 105 Morteira, through whom he became acquainted with the teachings of Maimonides (d. 1204) and Gerson (d. 1344), by an atheist physician, Franz Van den Ende, who taught him the classics, and possibly also impreg- nated his mind with naturalistic conceptions, and by a Cartesian, Ludwig Meyer, who instructed him in phy- sical science ; Spinoza meantime studying the works of Bruno and Descartes. His studies carried him beyond the faith of the Synagogue, and he, though once the hope of the Jewish doctors, had to undergo excommunication from the Synagogue. Hunted by persecutors, from whom, on one occasion, he made his escape barely with his life, he lived in rather close retirement in a number of differ- ent places, Rhynsburg, Voorburg, The Hague. At one period, at least, he won a (frugal) living by polishing lenses. Nothing not even a call to the chair of phi- losophy in the University of Heidelberg could tempt him to give up his quiet and independent mode of life, which alone could shield him from the possibility of being disturbed in the pursuit of philosophical contemplation. He had a number of discreet friends, to whom he com- municated his system as it grew. He was in close as- sociation with the (heterodox) Arminians at Rhynsburg. Directly or indirectly he was in communication with some of the most eminent men in the world of science and philosophy in Europe, Huyghens, Leibnitz, Boyle, Tschirnhausen. Works. Spinoza's chief philosophical works are : "Tractatus Theologico-Politicus ; " "Tractatus de Deo et Homine ejusque Felicitate ; " " Tractatus de Intellectus Emendatione et de Via qua optime in veram Cogni- tionem ; " " Ethica Ordine geometrico demonstrata et in quinque Partes distincta in quibus agitur, I. De Deo, II. De Natura et Origine Mentis, III. De Origine et Natura Affectuum, IV. De Servitute humana seu de Affectuum Viribus, V. De Potentia Intellectus seu de Libertate humana;" "Tractatus Politicus in quo demon- 106 A HISTORY OF MODERN PHILOSOPHY. strantur quomodo Societas ubi imperium Monarch ium Locum habet, sicut et Ea ubi Optimi imperant debet institui, ne in Tyrannidem labatur et ut Pax Libertas- que Civium inviolata maneat ; " " Epistolae." Only the first-named of the foregoing works was published in Spinoza's life-time. The " Tractatus de Deo et Homine " etc. was not generally known to exist, until the middle of the present century. Spinoza's masterpiece is the " Ethica ; " next in importance for the knowledge, of his philosophy are the " Epistolae.'' lxM . vWV ^ {fj^^*^ Philosophy: Motive and Genesis of Spinoza's Philos- ophy. The motive of Spinoza's philosophizing is prima- rily ethical." His ethical doctrines are prefaced by riTeTapHysical and psycKoIogical doctrines, and supple- mented b~y~a political ~fHeory \vEIch constitutes, as it were, a scholium to his doctrine of the passions. It must be observed, however, that Spinoza's ethical theory culminates, as it begins, in metaphysics, so that meta- physics does not exactly occupy a subordinate position in his system. Genetically viewed, the doctrine of Spinoza is, on the whole, a resultant of a combination of th~e Neo- Flatonlco- CabUIstic doctrine ot BruncTand the Cartesian doctrine. Three general stages may be detected in Spinoza's thinking ; the first of which may be character- ized as naturalistic, the second as theistic, the third_jis substantialistic. It appears, from a certain portion of the " Tractatus de Deo et Homine," that Spinoza's first thought was that of Nature as the infinite and as altogether perfect in its totality. Next as appears from another portion of the same work he held the notion of God as the- infinite, and God, too, viewed as a predetermining providence,jper- mitting human freedom and the operation of final causes. /-If with the conception of the perfect all-inclusive and self- \ contained, /. Ajfrifwtff s>j 'lm$t't a>^_P'rffrtnc t r ) Mind and yav. - Body. A " mode of God expressing his esseTlce in so far as he is res extensa, is extended, is a body " (Part II. Def. i.). Modes of thought express the essence of God in so far as he is a res cogitans. As the attributes of God are conceived each per se, and are not limited by one another, bodies, on the one hand, and modes of thought, on the other, are inde- pendent of one another ; and by ideas are to be understood, not anything passively received from body, but products of the mind's own action. An " adequate idea " is an idea which, as far as considered in itself and without relation to an object, has all the properties and characteristics of a true idea" (Def. ii.), i.e., clearness and distinctness. The following propositions are axioms : The essence of man does not involve necessary existence, i.e., from the order of nature it may happen that this or that man may or may not exist (Ax. i.) ; Man thinks (Ax. ii.) ; Modes of thought such as love, desire, or whatever other affects of mind, are not given in the same individual without the idea of the thing loved, desired, etc., though the idea may be given without any other mode of thought being given (Ax. iii.) ; We know a certain body affected in many ways (Ax. iv.) ; We neither know nor perceive particular things besides bodies and modes of thought (Ax. v.). Though extension and thought, body and mind, are independent of one an- other, or do not interact, the order and connection of ideas is the same as the order and connection of things (Prop, vii. Part ii.) ; Mind and body are but two corresponding sides of the same thing ; any bodily mode and the idea of that mode are one and the same thing ; and in general, the essence of the human mind is to be the idea of some par- ticular actually existing thing, /. e., of some body. The idea of the body constituting the object of the mind is necessa- rily given in the mind. Bodies external to our own are known through their effects upon our bodies, i.e., the ideas of them are involved with the ideas of our own body. The number of our perceptions depends on the aptitude of I 10 A HISTORY OF MODERN PHILOSOPHY. the body for being disposed in various ways. Acts of im- agination are dependent on the fact that, if the human body is affected with a mode which involves the nature of an ex- ternal body, the mind will continue to contemplate the external body as present until the human body is affected with such a state as excludes the notion of the presence of the body. Memory is a " concatenation of ideas involving the nature of the external bodies, according to the order of the human body." From this concatenation is to be dis- criminated that which takes place according to the order of the intellect, whereby the mind perceives things by means of their causes ; and which is the same in all men. Self- consciousness, or the idea of the human mind, " follows in God, and is referred to God, in the same way as the idea of the human body : " it is an idea which is a member of an infinite series corresponding to, or parallel with, the idea of the body, and is united with the mind as the mind is with the body ; the idea constituting the mind and the idea of that idea are two sides of one and the same thing. The ideas of the body are, so far as referred to the human mind alone, confused and inadequate ; so, too, are the ideas of those ideas. They are true when referred to God or seen in their origin. Every adequate idea (see Def. iv. above) and complete idea is true. There is adequate knowledge of that, and that only, which is common to all things in part as in whole, for this constitutes the essence of no particu- lar thing (Props, xxxvii. and xxxviii.). Such knowledge is expressed in axioms. Ideas in the human mind following adequate ideas are adequate. Abstract terms being, thing, something, etc. arise from the fact that the human body is capable of only a limited number of distinct states, and the states (and their corresponding ideas) become confused and generalized when their number exceeds a certain limit. There are three sorts of cognition : ( i ) opinion, or imagi- nation (opinio or imaginatio) , which may or may not be true; (2) reason (ratio), or "adequate" ideas, which is true but not demonstrated cognition ; (3) intuitive science SPINOZA. 1 1 1 (intuitiva scientia), which is "the adequate cognition of the essence of things through the adequate idea of the for- mal essence of certain attributes of God." In knowledge of the last named sort things are perceived in their neces- sary, eternal nature, or under the form of eternity, sub specie aternitatis (Bk. II., Prop. xliv.). "Imagination" perceives under the form of time. " Reason " is the faculty of adequate ideas which follow from God in so far as he constitutes the essence of the human mind. The mind has adequate knowledge of the infinite and eternal essence of God, since it has ideas by means of which it perceives itself, its body, and external objects as actually existing, and since, further, any idea of any body or particular thing actually ex- isting necessarily involves the infinite and eternal essence of God (Prop. xlvii.). "There is in the mind no absolute, or free, will, but the mind is constrained to willing this or that thing by a cause which also is constrained by another, and this by another, and so on in infinitum" (Prop, xlviii.). There is no independent power of willing, as of knowing, desiring, or loving. Men (ignorantly) suppose themselves free, merely because they have confused ideas of the causes of their deeds. " Free will " is identical with intellect : will otherwise is not distinguishable from the strongest desire^ So-called suspension of judgment is merely inadequate per- ception. This doctrine of will has special advantages in a moral point of view : it teaches that we are truly free and happy only as we know God ; it helps us to bear with equanimity inevitable misfortune ; it teaches us not to de- spise, hate, ridicule, envy, or be angry with any one : it shows men how they should act as citizens, viz., not as slaves, but as those who unconstrainedly do those things which seem best. Origin and Nature of the Emotions. Human actions and emotions are to be explained by the same method that the geometer employs ; the scientific treatment is merely, as it were, a " matter of lines, planes, and solids." " By emotions I understand affections of the body, by which the 112 A HISTORY OF MODERN PHILOSOPHY. body's power of acting is augmented or diminished, in- creased or decreased ; also the ideas of those affections " (Part III., Def. i.). . Subjectively viewed, an emotion is a confused idea by which the mind affirms that the power of the body or some part of the body to exist is increased or diminished, and by which the mind is constrained to think this or that thing rather than some other. When we are the adequate or real causes of our emotions (considered as affections of the body) we may be said to act. We are adequate causes in so far, and only in so far, as we have adequate ideas. The passions or passive emotions are to be referred to the mind only in so far as it involves nega- tion, or can be considered a part of nature which cannot per se and without other things be distinctly and clearly perceived. But the mind is also independent of nature as such, is essentially conatus, or' endeavor to persist in a cer- tain manner of its own, with a consciousness of this conatus. This conatus referred to the mind alone is will, referred to both mind and body is instinct, or appetite. Appetite, together with the consciousness of it, is desire, examples of which are benevolence, anger, cruelty, fear, modesty, ambition. Desires and passions are the two great classes of affects or emotions. As depending upon the body the mind suffers great mutation of condition, now passing to a greater degree of perfection, now to a less. ^lence arise two distinct classes of passions, or two passions, joy and grief, the former being the passion by which the mind 'passes to a state of greater perfection, the latter the passion opposite to this. The passions are, further, divisible, with reference to the externality or internality of their cause. Examples of passions^Having an external cause are love, hate, devotion, indignation, envy; examples of passions having an internal cause are humility, penitence, pride, shame. Joy and grief are the most general emotions. Desire is to be classed with joy as an emotion by which the mind is active and passes from a lower to a higher degree of perfection. All actions which follow from emotions SPINOZA. 113 which are referred to the mind, so far as it knows, are forms of "fortitude" which is either a desire by which each one endeavors from the dictate of reason alone to preserve his own being, "animosity" or a desire by which one endeavors from the dictate of reason alone to assist others and unite them in friendship, "generosity" (Spinoza dis- cusses forty-eight emotions which he regards as the chief not the only ones.) We may cite one or two propositions further on the origin and nature of the emotions. " If the mind has been once affected by. two emotions at the same time, it will when it is affected by either of them afterwards be affected by the other also." The mastery of the passions depends in considerable measure on the opposing of those by which the mind passes to a less degree of perfection by those by which it passes to a greater degree of perfection. Human Servitude or Power of the Emotions. Whatever strengthens that conatus, or endeavor to persist, which con- stitutes the essence of each thing, is good ; the opposite is evil. Things are not good in themselves, but because and in so far as desired and striven for. The stronger the cona- tus the more virtuous we are. There can be no virtue, without the desire to exist ; and there can be no virtue greater than the desire to exist, none to which it is re- lated as means to end. It follows from the foregoing prin- ciples that all forms of grief are evil. Some forms of joy may be evil if they exist in a very high degree, e.g., love, titillation ; others are, without qualification, so, e.g., con- ceit, great pride ; hope is not good per se. In view of the fact that evil emotions may be disciplined by means of stronger and contrary emotions, it is important to determine what emotions are stronger than and contrary to others. An emotion whose cause we imagine to be present in us is stronger than one whose cause we do not imagine to be present in us ; an emotion towards a thing present is stronger than an emotion towards a thing in the future to us ; feeling towards a thing which we imagine to be neces- sary is more intense, other things being equal, than towards VOL. i. 8 114 A HISTORY OF MODERN PHILOSOPHY. a thing which we imagine to be contingent, possible, or not necessary ; desire arising from joy is stronger, other things being equal, than desire springing from grief; love and generosity are stronger than hate, anger, contempt, etc. (All these propositions, it must be remembered, are demon- strated geometrico more, like all others in the "Ethica.") The Power of the Intellect or Human Freedom. By the fact that the mind possesses the power of concatenating ideas according to a different order from that of the body, there are other ways of moderating and coercing the emo- tions and attaining to spiritual freedom than by opposing to them those contrary and stronger, ways leading more directly, if not always more certainly, to reason. It is pos- sible to moderate feeling (i) by separating it from the idea of its exciting cause and joining it to other ideas (Part V., Prop, ii.), (2) by referring it to many instead of few causes, and to an object of reason rather than of sense or imagination (Props, ix. and vii.), (3) by view- ing things in their necessary character (Prop, vi.), or under the form of eternity. The last-mentioned method is not merely a means to freedom, but is in itself freedom. In viewing things sub specie J Tpialities, or (2) such as are not in bodies ex- ept in some mysterious and accidental manner, produce in us ideas that have no resemblance to the qualities them- selves, and may therefore be X qualities. Secondary qualities are of two sorts : ( i ) such as produce ideas in us through the senses, and (2) such as produce changes in other bodies whereby they are caused to operate on our senses differently from what they did before. The primary qualities of bodies are solidity, ex- tension, figure, number, motion, rest. Secondary qualities of the first-named sort are colors, smells, sounds, and tastes. The power the " sun has to make wax white," or " fire has to make lead fluid," are examples of the second-named class of secondary qualities. That " God should annex such ideas " (as those corresponding to secondary qualities) to motions with which they have no similitude, is "no more impossible to conceive . . . than that he should annex the idea of pain to the motion of a piece of steel dividing our flesh, with which that idea has no resemblance." Secondary qualities would have no existence were there not minds to be cognizant of them. In themselves ideas may be . classed as simple and complex. Of_simple-44eas. some are ; got by sensation alone, some by sensation and reflection t/ together, some by reflection alone. Some simple ideas belong to one sense only, as colors to sight, and heat, cold, and solidity to touch ; others to more senses than one, as space, figure, rest, and motion to both sight and touch. LOCKE. 139 Our ideas of pleasure and pain, existence, unity, power, and succession we get from sensation and reflection united. Our ideas of perception, thinking, willing, knowledge, faith, etc., are given to us in reflection only. The simple idea is given to the mind when, in a merely " passive " state, and in clear and distinct perception, it " contains in itself one uni- form appearance of mind, and is not distinguishable into different ideas." As the mind is passive in relation to sim- ple ideas, it is " not in the power of the most exalted wit or enlarged understanding, by any quickness or variety of thought, to invent or frame one new simple idea in the mind, not taken in by the ways before-mentioned, nor can any force of understanding destroy those that are there : the dominion of man in this little world of his own under- standing, being much what the same as it is in the great world of visible things, wherein his power, however man- aged by art and skill, reaches no farther than to compound and divide the materials that are made to his hand, but can do nothing towards making the least particle of new matter, or destroying one atom of what is already in being." In an active relation to its ideas, the mind may by repeating, comparing, uniting simple ideas produce to "almost infinite variety," "complex ideas," examples of which are space, time, number, substance, cause. Gom- plex ideas may be classed as ideas of m^^ of- sub-^ stances, and of relations. The idea of the mode " contains "the Supposition of a thing subsisting in dependence on an- other : the idea of the substance contains no such supposi- tion." Modes are either "simple," which are "variations or different combinations of the same simple idea" (e.g., dozen or a score), or "mixed, which are compounds ".of simple modes of various kinds (e. g., beauty, " which is a compound of color and figure causing delight in the be- holder "). The " mixed modes " do not correspond to any real existence, but are " scattered and independent " ideas " put together " by the mind, the unity of the mode con- sisting solely in an " act of the mind." Mixed modes are 140 A HISTORY OF MODERN PHILOSOPHY. constantly changing with custom and opinion. Substances are single or collective ; examples of the latter-named sort are "army," "lead." Ideas of Modes. Space as mere extension is a "simple idea." It must not be confounded with body (as was done by the Cartesians), since it is not solid, and its parts are immovable and inseparable. Modes of space are distance (including figure and place) and capacity. The fact that the power of " enlarging " our idea of space remains con- stant how many soever " additions " we may make, suggests to us the idea of infinite space, which, however, is not a positive idea. The same is true of the idea of time. (If we could " enlarge " other ideas as easily as we can those of space and time, we could more readily than we now can join the idea of the infinite with them.) Number is a "complex idea" (though a simple mode), which is given to us in all our experiences. Pleasure and pain are simple ideas indescribable, indefinable, and known only as experi- enced. They constitute the criteria of good and evil (moral and physical). Pleasure and pain are the primary constitu- ents of all our passions. " Happiness in its full extent is the utmost pleasure we are capable of ; misery the utmost pain ; the lowest degree of what may be called happiness is so much ease from all pain, and so much present pleasure as without which any one cannot be content " (Bk. II. ch. xxi.). Modes of pleasure and pain are: love, or the idea of the delight which any present or absent object is apt to produce ; hatred, or the " idea of the pain any present or absent object is apt to produce ; desire, or the uneasiness a man finds in himself upon the absence of anything whose present enjoyment carries the idea of delight with it ; " joy, sorrow, hope, fear, despair, anger, envy. The idea of " power " is a simple idea produced in us by the fact that the mind, being "every day informed by the senses of this alter- ation of these simple ideas it observes in things without, and taking notice how one comes to an end, or ceases to be, and another begins to exist which was not before, re- LOCKE. 141 fleeting also on what passes within itself, and observing a constant change in its ideas, sometimes by the impression of outward objects on the senses, and sometimes by the determination of its own choice, and concluding from what it has constantly observed to have been, that the like changes will for the future be made in the same things by like agents and by like ways, considers in one thing the possibility of having its ideas changed, and in another the possibility of making that change." We get our clearest idea of power from our own minds, from our ability to " begin or forbear," " continue or end," etc. The actual exercise of power in us (or will) is volition, one of the "simple ideas of reflection." Volition must not be con- founded with desire. Desire is that " uneasiness " by which alone the will is " determined ; " volition the act of the determined will. But will may " suspend the prosecu- tion of desire " ("as every one daily may experiment upon himself"). This power in the will is the real " source of all liberty " and of " that which is (as I think improperly) called free will." Properly speaking, the man himself, and not the will, must be said to be free or not free. Ideas of Substances. Locke's account of the origin of the " ideas of substances " (or independent beings) is as follows : *^he mind being, as I have declared, furnished with a great number of simple ideas, conveyed in by the senses as they are found in exterior things, or by reflection on its own operations, takes notice also that a certain num- ber of those simple ideas go constantly together; which being presumed to belong to one thing, and words suited to common apprehensions and made use of for quick de- spatch, are called, so united in one subject, by one name ; which by inadvertency we are apt afterwards to talk of, and consider as one simple idea, which indeed is a complica- tion of many ideas together, because, as I have said, not imagining how these simple ideas can subsist by themselves, we accustom ourselves to suppose some substratum where- in they do subsist and from which they do result ; which 142 A IflS TORY OF MODERN PHILOSOPHY. therefore we call substances. So that if any one will ex- amine himself concerning his notions of pure substance in general, he will find he has no other idea of it at all but only a supposition of he knows not what support of such qualities which are capable of producing ideas in us ; which qualities are commonly called accidents." A principal in- gredient of our complex ideas of substances is the idea of power, since the qualities of substances are dependent upon and rest in the substances themselves. The ideas of the primary qualities are necessary ingredients, and if we knew the relation of secondary to primary qualities, /. e., could reduce them to terms of the primary, our ideas of sub- stances would be fundamental and complete. Unfortu- nately, they are not now : in fact, it is " very evident : ( i ) That all our ideas of the several sorts of substances [God, ourselves, and the things constituting the world] are nothing but collections of simple ideas with a supposition of something to which they belong, and in which they sub- sist ; though of this supposed something we have no clear idea at all. (2) That all the simple ideas that thus united in one common substratum make up our complex ideas of *he several sorts of substances are no other but such as we have received from sensation or reflection. So that even in those which we think we are most intimately acquainted with, and that come nearest the comprehension of our most enlarged conceptions, we cannot go beyond these simple ideas. And even in those which seem most remote from all we have to do with, and do infinitely surpass anything we can perceive in ourselves by reflection or discover by sensation in other things, we can attain to nothing but those simple ideas which we originally received from sensation or reflection, as is evident in the complex idea of angels, and particularly of God himself. (3) That most of the simple ideas that make up complex ideas of substances, when truly considered are only powers, however we are apt to take them for positive qualities ; e. g., the greatest part of the ideas that make our complex idea of gold, as yellow- LOCKE. 143 ness, weight, ductility, fusibility, and solubility in aqua regia, etc., are all united together in an unknown substra- tum : all which ideas are nothing else but so many relations to other substances, and are not really in the gold consid- ered barely in itself, though they depend on those real pri- mary qualities of its internal constitution whereby it has a fitness differently to operate and be operated on by several other substances" (Bk. II. ch. xxiii.). As has already been indicated, the primary qualities belonging to bodily substances alone are extension, solidity, mobility; to spir- itual substances, perceptivity and motivity; to both, exis- tence, duration, and number. We " frame " our idea of God by joining the idea of infinity to that of finite spiritual substance. God is infinite knowledge, power, existence, duration, and number [!?]. Ideas of Relations. Ideas of relations are such as "father," which implies son or daughter; "cause," which implies effect ; " identity," which implies diversity ; and all moral conceptions, etc. Such ideas are derived " from the comparison of things one with another ; " and imply the previous existence of simple ideas. There are as many such ideas, of course, as there are " occasions of compar- ing " things with one another. Relations are " extraneous to things themselves and superinduced." The ideas of cause and effect are produced as follows : " In the notice our senses take of the constant vicissitude of things we cannot but observe that several particular both qualities and substances begin to exist ; and that they receive their existence from the due application and operation of some other being. . . . That which produces any simple or complex idea we denote by the general name cause ; that which is produced effect." The ideas of cause and effect presuppose the idea of power. The ideas of " iden- tity and diversity " are formed " when, considering any- thing as existing at any determined time and place, we compare it with itself as existing at another time. When we see anything to be in any place in any instant of time, 144 A HISTORY OF MODERN PHILOSOPHY. we are sure (be it what it will) that it is that very thing and not another which at that same time exists in another place, how like and undistinguishable soever it may be in all other respects. The principium individuationis is existence itself, which determines a being of any sort to a particular time and place incommunicable to two beings of the same kind." As regards personal identity, Locke says : " Since consciousness always accompanies thinking, and 'tis that that makes every one to be what he calls self, and thereby distinguishes himself from all other think- ing beings, in this alone consists personal identity, /. e., the sameness of a rational being ; and as far as this conscious- ness can be extended backwards to any past action or thought, so far reaches the identity of that person." We must distinguish between personal identity and the (sup- posed but perhaps not necessary) identity of substance in that which thinks. Moral ideas are ideas of relations cf actions to rules ; and " rules being nothing but a col- lection of several simple ideas, the conformity thereto is but so ordering an action that the simple ideas belong- ing to it may correspond to those which the law requires." Adequateness in Ideas. Locke discusses the distinc- tion of ideas made by the " Cartesians " into clear and obscure, distinct and confused, adequate and inadequate. As regards the last-named distinction, he says that simple ideas must all be adequate, since, "being the effects of certain powers in things fitted and ordained by God to produce such sensations in us. they cannot but correspond and be adequate to those powers ; and we are sure they agree to the reality of things ; " that our " complex ideas of modes, being voluntary collections of simple ideas which the mind puts together without reference to any real arche- types or standing pattern existing anywhere, are and can- not but be adequate ideas." Our ideas of substances, considered either as the substratum or as the sum, of the known qualities, are necessarily inadequate, imperfect, since we have no positive idea of the substratum, and tuunuujK* :tion, may i / riginal im- \/ o receives \ LOCKE. 145 cannot comprehend together the numerically infinite qualities. Association of Ideas. " Some of our ideas have a natu- ral correspondence and connection with one another; it is the office and excellence of our reason to trace these and hold them together in that union and correspondence which is founded on their peculiar beings. Besides this there is another connection of ideas wholly owing to chance, ideas that in themselves are not at all of kin, . . . always keep company. Their connection is made volun- tarily or by chance. Custom settles habits of thinking. Ideas having at first a merely accidental connection, become firmly united, because of strength of original pression or of ' future indulgence.' A man who receives a sensible injury from another is ever afterwards unable to dissociate the ideas of the two. A man has suffered pain or sickness in any place in space, and afterwards associates f the place and the sickness. Time__alojie_dissQciats--ideas \j thus united. The influence of this artificial association on the intellectual habits is sometimes unfortunate! Figure and shape, for example, are by custom associated in the child's mind with the idea of God. Some such wrong and unnatural combinations of ideas will be found to establish the irreconcilable opposition between different sects of philosophy and religion. This gives sense to jargon, demonstration to absurdities, consistency to nonsense, and is the foundatien_f_the greatest, I had almost said, of all errors in the world" (Book II., chap, xxxiii.). Words}- Locke finds, when he has arrived at the end of the discussion of the " original sorts and extent of our ideas," that " there is so close a connection between ideas and words, and our abstract ideas and general words have so constant a relation one to another, that it is impossible to speak clearly and distinctly of our knowledge, which all consists in propositions, without considering first the nature, use, and signification of language ; " that is to say, 1 Book III. Mill speaks of this book as " immortal." VOL. I. 10 J 146 A HISTORY OF MODERN PHILOSOPHY. he interpolates a third task between the two main portions of his task as it first proposed itself to him. Words are signs of our ideas about things, and of things themselves. The ends of language are the easy and rapid communica- tion of ideas in themselves and of the knowledge of things. It is impossible, and it would be "useless," that every particular thing should have a distinct peculiar name, useless, since so many names as there would necessarily be would overburden the memory, and necessary disagree- ment among men as to the names of the same things would defeat the end of discourse. General names are therefore, on this account, a practical necessity ; and they are, furthermore, natural products of thought, generated by the act of abstraction. The general name represents the nominal (or externally conceived) essence of a thing, not its " real " essence or substratum of qualities ; /'. within the bounds of the law of nature, without asking leave or depending on the will of any man ; " it is a " state of equality, wherein all power and jurisdiction is reciprocal, none having more power than another ; " a state, however, in which " every man hath a right to punish the offender and be the executioner of the law of nature, a state of peace, good- will, mutual assistance, preservation." This state ceases to exist by the fact that one man tries to obtain absolute power over another : a state of enmity, malice, violence, mutual destruction in short, a state of war ensues, in which power rests on mere force. The intolerableness of such a state makes civil government a necessity, the chief end of which is the maintenance of the right of property, or the right to life, liberty, and possessions. Property is meas- ured by the " extent of men's labor and the convenience of life." Within the state is the family, the chief end of which is the procreation and bringing to the age of reason of children. During nonage the child owes to the parent obedience, afterwards honor merely. The husband is the natural head of the family, as "being the abler and stronger." The power of husband and father is far from absolute. In case of absolute disagreement between hus- band and wife there may be an appeal to the law of the com- munity. Political society exists " there and there only . . . where every one of the members hath quitted his natural power, resigned it up into the hands of the community in all cases that exclude him not from appealing for protection to the law established by it. One who resigns his natural power thereby authorizes the society, or which is all one, the legislative thereof, to make laws for him, as the public good of the society shall require ; to the execution whereof his own assistance, as to his own decrees, is due." An absolute monarchy is not a true civil society, since the absolute monarch does not resign his natural power : abso- lute monarchy is a " state of nature." Now, in a state of J 158 A HISTORY OF MODERN PHILOSOPHY. nature there is wanting established, settled, and known law, a known and indifferent judge, " power to back and support the sentence of the judge when right, and to give it due execution." The possible forms of government, dependent upon the placing of the powers, are pure democracy, oligarchy, monarchy, hereditary or elective, and common- wealth, in which last the legislative power is the supreme power. The legislative power in the commonwealth, though supreme, has not absolute authority over the lives and for- tunes of the people ; it has, for example, no right to make arbitrary decrees, it cannot take from any man any part of his property without his own consent, it cannot transfer its function of making laws into any other hands. The supremacy held by the legislative power passes in a certain manner, however, over to the executive, in as much as the executive must have authority (especially as the legislative body does not always sit) to act according to discretion for the public good, without the prescription of law, and some- times even against it. In the last resort, the really supreme power of the state is with the people, who alone can alter the legislative and so determine the form of government. In relation to other states, the commonwealth is in a state of nature, and has among its powers what may be called a federative power. In case of conquest, he who conquers acquires no power over those " who conquered with him, acquires power only over those who have actually assisted, concurred, or consented to that unjust force that is used against him, and has over those conquered in a just war, a power perfectly despotical." Tyranny is power exercised beyond right. Governments are overturned from without, by conquest, and from within, by the alteration of the legis- lative power, and by unfaithfulness of legislature and prince to their respective trusts. Religion. Regarding Locke's doctrine of religion, it may be added to what has already been stated (page 152) concerning reason and revelation, that Locke advocated what he supposed to be a ";'aA'cke as it left the hands of Berkeley. On the principle of pure empiricism, mind and God as well as matter are nothing real. Hume is justified in calling the LEIBNITZ. 201 object of knowledge only a bundle of merely individual "perceptions," if there is no bond between phenomena except what is given in sense as such. Is there no other bond ; does the " mind " of itself contribute nothing towards knowledge ? And does not its contribution objectify that of sense? The suggestion of this question seems to be the chief service to philosophy of Hume's teaching. The at- tempt (by Reid, Kant, and others) to answer it constitutes the beginning of a new epoch in the history of philosophy. 72- Gottfried Wilhelm Leibnitz* (1646-1716). Leibnitz, who was a son of a professor in the University of Leipsic, where he was born, attended school in Leipsic and the universities of Leipsic and Jena. He became an omnivor- ous reader in his father's library, and acquired even before entering the university at the age of fifteen, a large ac- quaintance with ancient authors, the Scholastics, and the writings of the Protestant theologians. At the same time with his reading, he disciplined himself in habits of logical thinking and going to the roots and principles of things. At the universities he gave particular attention to the study of law, mathematics, and philosophy. Declin- ing a professorship offered him at Altorf, he took up juris- prudence, and soon gained a recognition which secured him favor and high trust. He was sent (1692) by the Elector of Mainz on an embassy to the court of Louis XIV. and on a mission to London. At Paris and London he made the acquaintance of a number of men eminent in science and philosophy, Huyghens, the Dutch mathematician ; Ar- nauld, the Cartesian ; Newton ; the English physicist Boyle ; Oldenburg, the secretary of the Royal Society. On his way between Paris and London he tarried to see Spinoza, of whom Oldenburg was a close friend. At the same time he 1 Works of Leibnitz; Zeller's "Geschichte der Neuern Philo- sophic;" Ueberweg, " History of Philosophy;" Erdmann; Noack ; " Encyclopaedia Britannica." 2O2 A HISTORY OF MODERN PHILOSOPHY. is said to have carried on very actively his studies in science and philosophy, and was " able to announce an imposing list of discoveries and plans for discoveries arrived at by means of a new logical art, in natural philosophy, mathematics, mechanics, optics, hydrostatics, pneumatics, and nautical science, besides new ideas in law, theology, and politics, and a calculating machine for multiplying, dividing, extract- ing roots, as well as adding and subtracting." 1 In 1676 his discovery of the Differential Calculus was announced. In the same year he became librarian of the ducal library at Han- over, and counsellor to the court. A number of other posi- tions of distinction were held by him : he was appointed privy councillor of justice by several Governments, among them that of Russia, first president (and president for life) of the Berlin Society (after 1 744 Academy} of Science ; was made by Austria Baron of the Empire and Imperial Privy Coun- cillor, etc. He was commissioned by each of the Govern- ments of Germany, Russia, and Austria to plan an Academy of Science. His last years were embittered by controversy (with Newtonians), by the death of his friend and favorite pupil, Princess Sophie Charlotte, of the house of Branden- burg, and by the neglect of former friends and patrons. Only a single mourner, it is reported, followed his remains to the tomb ; the French Academy alone, in the learned and scientific world, took cognizance of his death. Leibnitz is frequently placed on a level with Aristotle as to the origi- nality and catholicity of his mind and attainments ; and the comparison seems just, though Leibnitz hardly bears the same relation to modern philosophy that Aristotle does to the ancient. Personally, he is said to have been frank, benevolent, and inclined to conciliate favor. Works. The philosophical works of Leibnitz fall natu- rally into two general groups, one of which consists of those writings suggesting or containing the exposition of his final and distinctive doctrine, and the other of writings, earlier in time, and expounding positions which proved to 1 " Encyclopaedia Britannica," art. Leibnitz. LEIBNITZ. 203 be merely tentative or only secondary in importance. To the latter group or class belong, with others : the " Disputatio metaphysica de Principio Individui " (1663), Scholastic in doctrine ; " Dissertatio de Arte Combinatoria " (1666), a logical treatise growing out of the study of Raymond Lullius; " De Stilo Philosophico Nizolii " (1670) ; " Metho- dus Nova Docendae Discendaeque Jurisprudentiae," etc. (1669); " De Vita Beata ; " " Meditationes de Cognitione, Veritate et Ideis" (1684) : to the former group or class belong, " Letters to Arnauld " (1671 and 1690) ; "Systeme Nouveau de la Nature et de la Communication des Sub- stances" (1695); "Nouveaux Essais sur PEntendement Humain " (i 765), which were ready for publication in 1 704, but (owing to the occurrence, soon after, of the death of Locke, in reply to whose " Essay Concerning Human Un- derstanding" they were composed) were not then published ; " Essais de Th^odicde sur la Bont de Dieu, la Libert^ de 1'Homme, et 1'Origine du Mai" (1710), an intended reply to the sceptic Bayle ; " La Monadologie," a brief epitome of Leibnitz's system ; " Principes de la Nature et de la Grace "(1714?), a still briefer epitome of his system ; and Letters to Clarke "SurDieu, 1'Ame, 1'Espace, la DureV (1715-1716). Leibnitz's Earlier Doctrines. Leibnitz (as he himself indicates in the "Systeme Nouveau de la Nature," at the beginning) successively occupied, before arriving at his final standpoint, positions identical with or nearly akin to those of certain of the Scholastics, of Bacon, of Descartes, of the Atomists (Democritus, Gassendi), and of Aristotle. In the " De Principio Individui " he maintains the " nominal- istic " view that the real and distinctive character of a thing is to be found in that thing as it exists ; that what- ever exists is by its very nature as existent an individual, as opposed to the " realistic " view that it is constituted by a principle, positive or negative, actually separate from the thing itself as existent. It appears, however, that the nominalism of Leibnitz was of the moderate sort (first) ad- 2O4 A HISTORY OF MODERN PHILOSOPHY. vocated by Durand de St. Pourcain, of the fourteenth cen- tury, who held the universal and individual to be the very same thing, only regarded from different points of view, the individual being the thing as completely determined. 1 As far as it goes, this position is not inconsistent with the final standpoint of Leibnitz. In the " De Arte combinatoria " and certain other works the more modern, mathematico- mechanical view makes its appearance : knowledge is treated as pure calculation, all occult qualities and powers, all attributes, in fact, that are supposed incapable of a mere- ly mechanical explanation, are denied to bodies. At the same time, however, more importance is attached to the Aristotelian than to the Cartesian physics. It should be noted, too, that the nominalistic and anti-Aristotelian view that the genus is merely the collective totality of individ- uals is criticised as undermining demonstrative (mathe- matically deductive) science as opposed to induction, which is at most merely probable in its results. Appended to the " De Arte Combinatoria " is an attempted mathe- matical proof of the existence of God. The influence of Bacon is especially apparent in the " Methodus nova Docendse Discendaeque Jurisprudentise, " in which, after the manner of the " De Scientiarum Augmentis " of Lord Verulam, is given a survey of the sciences and their rela- tions, with a great show of system, with the use, however, of the deductive method. 2 In the " Meditationes de Cog- nitione, Veritate et Ideis " are repeated, developed, and supplemented, Descartes' distinctions regarding ideas as obscure or clear, confused or distinct, etc. As, however, Leibnitz's views on this subject remained unchanged, and reappear in his final general standpoint, they may be passed over here. In the " Systeme de la Nature " Leibnitz confesses that in his dissatisfaction with Aristotle as first understood by him he adopted the conception of the atom because of its definiteness, but saw later that no real principle of unity could be found in matter alone, and 1 See Ueberweg, Erdmann, etc. 2 Noack. LEIBNITZ. that the key to the solution of the difficulty lay in the "substantial forms," or "first entelechies," of Aristotle. Thence he was (through the influence of Bruno, apparently) led directly to the notion of the spiritual atom, or the monad, though the name " monad " was not made use of until many (nearly thirty) years after the notion was adopted (i.e., not till about 1697). Regarding Leibnitz's attitude towards his predecessors, it should be observed that, to employ his own expression (in the "Systeme de la Nature"), he "sought to reooncile Plato with Democ- ritus, Aristotle with Descartes, the Scholastics with the Moderns, theology and morals with reason." Leibnitz's philosophy in its catholicity and conciliatory character partakes of the mind and disposition of its author. Final Standpoint : Substance and the Monad. The ulti- mate elements of being' cannot, according to Leibnitz, be material atoms/ since whatever is material is extended, com- posite, passive, and dependent, lacking in a real principle of unity, and incapable of action or the exertion of force. /A real ultimate principle of unity and activity can only be an immaterial atom, perfectly simple, self-determining, and, since the only notion of a being capable of action is that taken from the idea of our own souls, spiritual in nature This spiritual atom (which, seemingly after the example of Bruno, ~LeiBnitz~ terms the Monad), singly or in combi- nation, is substance, or the sole underlying reality of the universe ; all else is phenomenal. Substance is either simple or composite, and since so-called matter is infinitely divisible, there is an infinite number of simple substances or monads. As simple, the monad is not subject to nat- ural generation and decay, as material bodies are ; it is not created nor annihilated, except by the absolute divine will. Though, as simple, it is without parts, the monad yet has, for otherwise it would be nothing conceivable, internal qualities and aspects by which it is distinguished from every other monad. The finite monad, as finite, is ever changing ; but as simple, and as an activity, it is self- 206 A HISTORY OF MODERN PHILOSOPHY. ' determining and changes according to a law, is a subject of development, every state being a result of preceding states, the present being "pregnant with the future." As self-determining, it transcends the law of natural action and reaction; its relation to other monads is merely a representational or ideal one. /The internal actions of the monad are, in general terms, either " perceptions," which are representations of what is external to it and its states, or " appetitions," which are its active tendencies to con- stant change from one perception to another. It is by its power of representation that the monad enters into accord and combination with others, forming composite substances. In every such combination there is some single monad in which it is " represented " and which forms its centre ; and. conversely, every monad forms, in a single regard, the centre of a combination of monads; and substance is throughout organic in constitution ; in every point of it is virtually represented every other, every point is, according to its place, a representative, reflection, or mirror of the whole universe of substance. In so far as monads are posi- r tively representative, they are active ; in so far as they are represented in and by other monads, they are passive : so that, in each monad, activity and passivity are combined, the latter constituting a limitation of, or check upon, the former, thus rendering the monad in so far finite. The activity of one monad corresponds to the passivity of other monads represented by it, and vice versa. There is, there- fore, virtually a universal reciprocity and harmony of the monads, the centre or uniting principle being, as it were, situated in a single monad, the monad of monads, God. This correspondence and harmony are not temporal and real, but pre-established, ideal, and eternal : the monads, once having received their nature in the absolute act of their creation, are pure substances and forever self- determining. Representations. As the monad is of a spiritual nature, a sort of soul, its acts of representation are ideas, though 5 LEIBNITZ. 2O7 not necessarily conscious ideas, as the Cartesians wrongly maintained. Ideas or acts of representation are, in fact, of three degrees, unconscious (as in dreamless sleep or in a swoon), semiconscious, and conscious. To unconscious representation the term " perception " is applicable ; to conscious representation, as conscious, the term "apper- ception." Monads, whose representations are wholly unconscious, are " simple monads ; " those whose represen- tations are semiconscious (as in the case of elementary memory in animals) are " souls " in a narrow sense of the term ; those whose representations are fully conscious are " spirits." These distinctions are not absolute : the human soul, which is a " spirit," may sink into such a condition of lethargy as to become animal (as in dreamless sleep or in swooning). As directly implied^ln the foregoing, the monad rises or falls in the scale of being according to the character of its ideas. Ideas. Ideas may, or may not, be such as fully repre- sent to us an object ; if they do, they are clear, if not, obscure. When by means of an idea I clearly distinguish the marks of the object which it represents, the idea is distinct ; when I do not, it is confused. When it fully represents the object in all its attributes and relations, it is adequate, when not, inadequate. An idea is intuitive if it immediately presents all elements of the conception of its object ; it is merely symbolic when it does not do so. A perfect knowledge is a knowledge contained in ideas that are adequate (adequateness implying distinctness, which in turn implies clearness), and intuitive. Such knowledge pre- supposes such an ordered and complete analysis of con- ceptions that the notion sought is self-evident, its own ground or explanation. This it is completely only as per- fectly simple or free from contradiction. (Leibnitz seems to have conceived, in a vague, general manner, a catalogue or table of ultimate simple notions, which, by the aid of an exact system of designations, should form the basis of an absolute a priori science, similar to, but more truly uni- 2O8 A HISTORY OF MODERN PHILOSOPHY. versal than, mathematics. He was, however, doubtful as to the possibility of such notions for us. They would be ana- logues in [subjective} consciousness of the supposed atom in space.) The highest principles of knowledge are, according to the foregoing, the principles of identity or contradiction (principium contradictions} and of ultimate ground, or sufficient reason (^principium rationis sufficiently) . The principle of contradiction is a " formal principle," and governs the activity of pure reason, or the faculty of uni- versal and necessary ideas, or ideas growing out of, and representing, the nature of the monad, sub specie ceternitatis . Such are immediately apperceived by the monad in its developed consciousness of itself. By the principle of sufficient reason, we rise from given facts to principles, which are merely geneflM and probable, and at most possess a merely moral necessity, and which constitute " regulated experience." To these two may be added a third (which is a synthesis of the two), of secondary importance: the principium indiscernibilium, or the principle that there are in nature no two things perfectly similar. (This is a relic of the nominalistico-realistic position once held by Leib- nitz.) As to origin, all ideas, since the monad is self- determining, arise from the soul itself: universal and necessary ideas exist in the monad eternally, either as inclinations, dispositions, impulses, or as fully apperceived forms of thought and being ; and ideas of mere individual and contingent fact follow necessarily, according to the law of ground and consequent, from other ideas whether con- scious or unconscious. It is true, however, even as regards universal and necessary ideas that, as the empirical psycho- logists have held, all ideas originate in sense, that there is nothing in intellect which was not already in sense, and that for every conception there must have been a perception ; but it is also true that even in sense, intellect is present, and that reflection merely brings out of our perceptions what we, as spiritual beings, have beforehand put into them. All acts of learning are the bringing forth of new ideas out of old, LEIBNITZ. 209 confused, and unconscious ones, the assisting of the natural tendency of unconscious ideas to become conscious. Appetitions. The succession of the acts of the soul is on their dynamical, as on their ideal and static, side, deter- mined according to the laws of contiguity and sufficient reason: each effort or appetition )is determined by an im- mediately preceding state of soul. Each effort, however, must be an idea, conscious, semiconscious, or unconscious. Unconscious appetition is the " impulse of development ; " semiconscious, " instinct." Appetition risen into conscious- ness, or become arTobject of apperception, isjgjjl. Will is (of course) not free, in the sense of being arbitrary : it is free only in so far as depends on the fact that the soul is an automaton, or acts from within. The supposition of a free will, in the sense of undetermined will, has its basis in the fact that the real causes of some of our acts are unconscious. The will is more nearly free, because less restrained by an inherent passivity, the higher the order of its ideas, and the more it is determined from the higher nature of the soul. As its acts are predetermined, its good- ness is never a moral goodness, but only a sort of natural perfection, the degree of the perfection corresponding to the character of the ideas dominating- the will. The end of all appetition as such is some form of pleasure. In the case of semiconscious appetition, there is first a combina- tion of impulses, giving rise to a certain (felt) tendency to- wards a definite idea. This, if not fully realized, is longing or fear; if realized, pleasure or pain. If there be combined with the tendency, memory or imagination, a preponder- ating inclination results, which decides the will. The good, or that which is will in this stage of appetition, is whatever produces pleasure or satisfaction ; evil, or that which is shunned, is whatever produces pain. In higher natures, the pleasure aimed at is an enduring one, or happiness, since only such pleasure accords with the eternal nature of reason. (Hence the importance of right education, or en- lightenment, in view of human welfare.) As reason is not VOL. i. 14 2IO A HISTORY OF MODERN PHILOSOPHY. merely individual but also universal, happiness includes, besides self-satisfaction, satisfaction in the joy or perfection another, and is (therefore) love. And the end of human action whether of the individual or of the race is human perfection and happiness through reason, or love, philanthropy. This is the highest good. From philanthropy flows natural right. This has the three forms of justice (in the narrow sense), equity, and piety. (Three corresponding formulae are, Neminem Iczde, suum cuique tribue, hones te vive.} Justice in the narrow sense (jus strictutri) is rightness in matters of exchange, " commu- tative justice." Equity (aquitas) is the obligation to secure to every one his deserts (universal welfare), (Aristotle's) distributive justice. Piety {pietas} is right- ness towards the divine order of things (and presupposes a belief in God, a divine order of the world, and retribu- tion). Positive or arbitrary right consists in the ordering of given relations, in accordance with the principles of natural right : it necessarily differs among different peoples, but is not therefore contradictory to natural right. The External World. As regards the representational values of ideas, it has to be said, first and in general terms, that as the highest principles of knowledge are those of contradiction and sufficient reason, phenomena in which these principles can most clearly and distinctly, or ade- quately, be discerned, must be regarded as the highest mani- festations of being as such. The composite or bodily is, as such, without a principle of unity : it is self-contradictory ; the simple or monadic is of the opposite character. Again, that which is immediately given in experience is neces- sarily imperfect, since it reflects imperfectly the idea of sufficient ground, points beyond itself for its explanation. So far, therefore, as these principles fail to appear in a given phenomenon, it is mere phenomenon. The phe- nomena of space and time to be specific are, as such, merely phenomena ; space is merely a phenomenal form under which things appear in confused perception. The LEIBNITZ. 2 1 1 explanation of mere phenomena is a purely mechanical explanation such as the Cartesians gave (of physical na- ture). But since real being (substance) is active force and not mere motion, the only real explanation of the ex- ternal world is a dynamical one, one governed by the law of sufficient reason, or, since the principle of sufficient reason necessitates a knowledge of ultimate end and pur- pose, the law of final, as opposed to secondary, causes. Now, of nature as an organic force, or rather organism of forces, two special laws may be predicated : ( i ) as governed throughout by a single end, nature is continuous, never makes any leaps, there can be, for example, no (New- tonian) action at a distance; (2) as substance is neither created nor destroyed, the sum of " living " (or active) force (not of motion, as the Cartesians maintained), or MV* (product of the mass by the square of the velocity) , is for- ever the same. 1 ' According to the law of continuity, the universe is an. infinite series of beings of infinite varieties of perfection ; for, in the first place, though the existence of two or more exactly similar monads is in a manner con- ceivable, yet there is, in reality, no sufficient reason why there should be ,two or more monads precisely alike (prin- cipium indiscernibilium), and, in the second place, that there be no leaps in nature, every possible degree of dif- ference must be contained in the monads collectively re- garded. (The real sufficient reason and principle of identity and continuity in the universe is, of course, God.) As regards body and soul, each has its nature and existence, not through the other, but from a precedent being of its own kind, though there is no body without a soul, no soul without a body, and there is a constant harmony between them. This connection of body and soul is, in fact, but a special instance under the general law of pre-established harmony. In this union of body and soul we have, on 1 According to the doctrine of the present day, the doctrine of the " Conservation of Energy," it is the sum of the " living," or kinetic, and the " dead," or potential, forces that is constant. 212 A HISTORY OF MO DERM PHILOSOPHY. one side, a being that comes into and passes out of being, namely, the body, and on the other, a being that is eternal, undergoing no change except that of metamorphosis, or transformation from a lower to a higher form of existence (which must not be confounded with metempsychosis). The changes of the body, as existing, are by the law of continuity gradual only, take place as a result of the enter- ing and leaving the body of a few particles at a given time. The soul is contained, in germ and as central monad, in the corporeal seed that develops, after the union of the sexes, into the human body. God. ( i ) By the law of the sufficient reason, we must infer the existence of an eternal, supra-mundane, omnipo- tent power. (2) By that of final cause, we infer the exis- tence of an eternal supra-mundane will and end of all things. (3) From the fact that the contingent generally presupposes the necessary, we infer the existence of a single necessary being. (4) From the existence of neces- sary truths, we must infer that of a necessary mind as their " place," a divine understanding. Thus we arrive at the truth of the existence of God. (5) We may further argue God's existence from the very idea of him, as did the Car- tesians, provided the Cartesian argument be supplemented with the addition that the idea of God is not self-contra- dictory (since it embraces "realities" or "perfections" only). (6) A still further proof of God's existence is as follows : if God is possible, he exists ; for if he were not, he would not even be possible, and nothing else would exist; but other things for example, I myself exist, ergo, etc. (Proofs i, 2, and 3, it may be noted, are s teleological proofs, proof 4 is psychological, proof 5 onto- logical, proof 6 partly ontological and partly teleological.) The attributes of God are not so strictly a matter of proof as is his existence. As the individual (human) soul is indestructible and maintains a separate existence after death, there is possible no universal all-absorbing being (Spinoza's God). The idea of individual consciousness LEIBNITZ. 2 1 3 and existence is incompatible with that of consciousness and existence as a part of a universal, all-absorbing spirit. Further, the beauty and order of the universe were nought "were the variety of existence in innumerable separate souls reduced to a sabbath of quietude " in a single indi- vidual being. <^God is a separate individual, a distinct monad. \ Since he is the " place " of eternal truths, he must be conceived as possessing wisdom ; since he is the source and end of all acts aiming at the better life, or per- fection, he possesses goodness; since perfection includes satisfaction in the weTfare~~br happiness of others, he is loye^. Since he is the sufficient reason of the existence of all things, he isjgQwer. His chief attribute is necessarily wisdojn ; by this, all acts of his will are determined, as the strivings of the monad are determined by its ideas. Hence the world of nature is the best possible natural world, and the world of spirit (of " grace " ) is the happiest possible ; and the two are in the highest possible harmony. God is the author of evil (as well as of the good) because he is the author of that which is, by its very nature, finite, im- perfect (it is not finite because of a will to make it such). There can, in other words, be only one perfect or infinite being. Things are good or evil, not in themselves, but in their relation to the general nature and end of existence. From this point of view, the world of finite beings must be deemed the(jiest possible world of finite things!} That all sorts of good may in accordance with the law of con- tinuity be realized, there is, necessarily, inequality. This is, abstractly and metaphysically speaking, a necessary evil. From this necessary, metaphysical evil flow two others, physical evil, or pain, and moral evil, or sin ; inequality is necessarily felt, and there are necessarily imperfect degrees of rationality in action. But evil of whatever nature has a negative rather than a positive existence. God does not will it ; he merely suffers it. God's choice of the present world among all conceivable, worlds, was governed by moral necessity ; he created the world accor- 214 A Iff STORY OF MODERN PHILOSOPHY. ding to a "divine mathematics" The world, therefore, is the harmony of the principles of freedom, or " grace," and of necessity, or nature ; Ideological and mechanical laws are everywhere in perfect accord. And since moral neces- sity is the necessity of the idea of the good, or happi- ness, or complete perfection of personality, the reality of happiness or personal perfection is a thing of mathematical certainty. The contemplation of the world in its perfection must result in tranquillity of mind, and yield the deepest satisfaction. Man's capacity to apprehend this perfection, a capacity which he possesses by virtue of the possession of reason and the knowledge of the eternal verities, renders him a denizen of the City of God, of which God is sole ruler, as he is the architect of the realm of nature. In that society there is no crime without punishment, no good deed without proportionate recompense, and as complete virtue and enjoyment as are possible. ^ ' Result. The theory of Leibnitz is a rationalistic ideal- ism (the opposite of Berkeley's empirical idealism). Its cardinal features and those, naturally, which have had the most important influence upon succeeding thinkers are its conciliatory aim, its monadism, or dynamic atomism, its assertion of the spjontaneity of thought (as against the sensational istic doctrine of the mere passivity or receptivity of thought), the doctrine of pre-established harmony, its determimsm and eudaemonism, its optimism, or attempted reconciliation of mechanical and Ideological views of na- ture. The course of philosophical thought since Leibnitz, has demonstrated that his rationalism was somewhat too subjective and formal, and required to be supplemented by its opposite empiricism, as was in fact done in the system of Kant. 73- Walther Ehrenfried, Count von Tschirnhausen 1 (1651- 1 708) . Von Tschirnhausen was a native of Upper Lusatia. 1 See Zeller's " Geschichte der deutschen Philosophic." TSCHIRNHA US EN. 2 1 5 He resided for a long time in Holland and France (Paris). He took courses in mathematics and physics in the Univer- sity of Leyden, and afterwards travelled very extensively, and made the acquaintance of distinguished scholars and artists. Among his friends were Spinoza, the mathemati- cian Huyghens, and Leibnitz. He was elected member of the French Academy. His death is said to have deeply grieved Leibnitz. Works. Works of Tschirnhausen are, " Medicina Mentis sive Artis inveniendi Praecepta generalia " (1689), his chief work, and dissertations in the Leipsic "Acta Eruditorum " and in the "Me" moires" of the Paris Academy. Philosophy. Tschirnhausen emphasizes four " funda- mental facts" of consciousness, (i) the consciousness of ourselves (as shown by Descartes), through which we get the idea of mind; (2) the consciousness of agreeable and painful feelings, whence we derive the idea of good and evil ; (3) the consciousness of our comprehending some things and not others, whence we derive the notion of the understanding, and of the true and the false ; (4) the con- sciousness of passivity in ourselves and of our having im- pressions, upon which the knowledge of external existences is based. All knowledge begins with these inwardly expe- rienced facts : all knowledge is based on experience. To constitute real knowledge experience has to undergo a reduction to the third sort of consciousness above men- tioned, /. " Theologia Naturalis " (i 736-1 737), " Philosophia Practica Universalis " ( 1 738-1 739) . Philosophy: Stand-point and Method. Wolff, as a true disciple of Tschirnhausen and of Thomasius, lays em- phasis upon two things as prime requisites of philosophy ; viz., precision and intelligibility of method, and utility of end or result. By philosophy Wolff understands the science of universal conceptions, the science which seeks to de- monstrate how the possible, or universally conceivable, can be in reality. Its method is necessarily an a priori method : philosophy begins with pure conceptions, whatever their 222 A HISTORY OF MODERN PHILOSOPHY origin, and merely draws from them that, and only that, which is contained in them. This method, like the geo- metrical, is not only a priori, but demonstrative and certain. Philosophy, therefore, though engaged with truth in gen- eral, is quite distinct from empirical science, which, instead of being a priori, necessary, and certain, is a posteriori, contingent, and uncertain. The Divisions of Philosophy. As there is in man a fac- ulty of cognition (facultas cognoscitiva} and a faculty of appetition or volition {facultas appetitiva), philosophy is theoretical philosophy (philosophia theoretica sive metaphy- sical) and practical philosophy (philosophia prac tic a). In- troductory to theoretical philosophy, and to a certain extent forming a part of it, is the science of logic, having a " theo- retical" part, treating (in Aristotelian manner) of the prin- ciples of formal thought; and a practical part, treating (more in the modern manner) of the grounds, limits, and forms of knowledge, and of the practical uses of logical method. The material sciences embraced under the term " theoretical philosophy " are ontology, cosmology, psychol- ogy, natural theology ; under the term " practical philoso- phy " universal practical philosophy, ethics, economics, politics. Ontology. Ontology is the theory of being in general, and its categories and kinds. This is philosophia prima. Its highest principles are those of contradiction and suffi- cient reason. The latter depends on the former, as is proved in the following manner : " Suppose A and B to be precisely alike. If it is possible that there can be anything which has not a sufficient reason, then a change may take place in A which does not in B If B be substituted for A. But since from the very fact that A and B are precisely alike, it follows, if we assume that the principle of sufficient reason is not a valid principle, that A and B are not precisely alike, and since, on the contrary, it is impossible that a thing can both be and not be, the principle in question must be indisputably correct : everything has its sufficient WOLFF. 22.3 reason for being." 1 Leibnitz incorrectly assumed that these two principles were independent of one another, and that the latter was axiomatic. The main problem of philosophy, to show how the possible can be actual, is solved by the conception of determination, the actual being that which combines into one definite or determinate nature many pos- sible distinctions, or, rather, being that determinate nature itself. The possible is the non-contradictory, and the sufficient reason of the determinate being is a certain determinant (or cause, in the Aristotelian sense). If the determinant be in the determinate thing itself, that thing is absolutely necessary; if in another thing, contingently, or hypothetically, necessary. Determinations or qualities of a thing following from its own nature are attributes; those not so following, are modes. The highest reality is that which is most determinate in nature, and vice versa. The attributes of the actual may be termed realities. Truth is formal order or consistence. Being is either sim- ple or composite. Simple being is being without extension, time, space, motion, form, becoming, etc., which character- ize composite being only. Simple beings are monads, metaphysical points, eternal and completely individual, or distinct in themselves and 'from one another ; they alone are true substances. They are subject to no real change : that which belongs to them is always present in them. They are active, instead of passive, are centres of determi- nate and determining force. A portion of them only (says Wolff in his later philosophizing) have the faculty of idea- tion, the rest are merely natural atoms (atomi nature*}. (This is, of course, an important departure from the doctrine of Leibnitz.) To composite beings belong all those attri- butes above denied to simple beings, extension, time, space, motion, form, becoming, etc. Extension is the co- existence of different things external to one another. Things co-existent are contemporaneous ; successive are 1 See " Verniinftige Gedanken von Gott, der Welt u. der Seele," etc., near the beginning. 224 ^ HISTORY OF MODERN PHILOSOPHY. things of which the ending of one must precede the begin- ning of another. Time is order of succession in a constant series ; space, order of co-existence of contemporaneous things. Force is the sufficient reason of activity, etc. The composite is material, temporal, and a plurality, subject to real change or succession of qualities : it is finite. Cosmology. The world is a machine, a plurality or multiplicity of interrelated bodies, the changes of which occur in accordance with the laws of motion. The ultimate elements of bodies are simple substances, monads. Inter- mediate in nature between these and bodies are certain secondary elements of bodies composed of simple sub- stances. These are termed corpuscles (some of them being "primitive," some "derivative" corpuscles), and are, for empirical science, ultimate elements. They are not sensible, though bodily. The philosophy of these is physics ; that of the real, ultimate elements universal or transcendental cosmology. The latter is theoretically prior to the former. Physics is partly empirical science, partly dogmatic or mathematical science. Dogmatic physics may also be termed the science of nature. It begins with the corpuscles and their motion, and mathematically deduces bodies from them, /. e., from the corpuscula derivitiva. Bodies, and even the corpuscles, being phenomenal, or objects of confused ideas, no strictly mechanical derivation of them from ultimate substances is possible ; all explana- tion is necessarily physical or teleological, /. There were in the conditions of the age in which the Leibnitzo- Wolffian philosophy flourished, reasons why that philosophy should (in general) give place to a philosophy the object of whose interest should be, not truth in general and for its own sake, but a limited aspect of it and for utility's sake, why, in other words, that would-be universalistic, scientific rationalism should give place to a pronouncedly limited, merely humanistic, and even individualistic one. There 1 Zeller, Erdmann, Noack. THE GERMAN " ILLUMINATION." 259 was in the very spirit of the age in Germany a distinct sub- jectivism which revolted against custom, authority, and law in all matters, and sought to determine everything anew and from inner original sources. This was reinforced, as regards philosophy, by an influx of French materialism (particularly at the court of the gallicized Frederick the Great) and of English empirical psychology, deism, and moral philosophy. Even in the Leibnitzo-Wolffian philosophy, indeed, there was an element that was entirely in harmony with all this. To say nothing of a certain individualism implied in its doctrine of monads, its insistence upon common intelli- gibility and practicality as prime requisites of a sound philosophy, upon the paramount importance of an " enlight- ened understanding " as a condition to human welfare and happiness, was calculated to throw the weight of its influ- ence with the common mind entirely in the direction of a rather narrow rationalism, much narrower than the system of Wolff (as a system which professed to take all knowledge for its province) would admit of, a rationalism that de- spised " metaphysics " and " mysticism," and extolled " com- mon sense " and " sound understanding." It was therefore in every way natural that the prime object of interest in philosophy should be man, and the question of his present and future welfare and happiness, that thought should centre upon his inner experiences and his faculties; that self- contemplation and diaries, confessions, autobiographies, etc., resulting from it should become a fashion ; that philo- sophical discussion should run mainly along the lines of empirical psychology, aesthetics (utilitarian), moral philos- ophy (equally utilitarian), natural theology, and should be unsystematic and not altogether profound. Such at least was the case. By far the most important thinkers of the En- lightenment, as it is usually termed, are Moses Mendelssohn and Lessing. Besides these two should be mentioned here : Hermann Samuel Reimarus (1694-1768), a pronounced Woffian (except as to the doctrine of pre-established harmony), who sharply opposed to the ruling orthodox theology the teachings of a rationalistic natural theology 260 A HISTORY OF MODERN PHILOSOPHY. (containing a distinction of teleology into internal and external which was adopted by Kant), and taught a pro- nounced eudaemonism ; Johann Georg Sulzer (1720- 1779), noted chiefly as a writer in aesthetics, but author of an ethico-physical treatise in which the ground is taken (for example) that the divine goodness appears in the fact that cherries do not ripen in the winter, because then they would not taste so well as in the summer, an instance of the superficially anthropomorphic teaching in the teleology of this period; Nicolaus Tetens (1736-1805), a Leibnitzo- Lockian, who was one of the " first to co-ordinate feeling as a fundamental faculty with understanding and will," and was esteemed and followed by Kant as a psychologist, and was in turn capable of appreciating and being influenced by Kant; Johann Georg Heinrich Feder (1740-1820), a representative eclectic of the " common sense," utilitarian type, who, together with Christoph Meiners, established a " Philosophical Library " for the purpose of combating the Kantian Criticism; Johann Bernhard Basedow (1723- 1790), a successful popular pedagogist, one of whose doc- trines may here be mentioned because of the contrasts it offers to a corresponding one of Kant's, viz., that the doctrines of the existence of God and the immortality of the soul must be true because belief in them is morally beneficial. 1 We may now turn to the two most important Illuminationists, Mendelssohn and Lessing. 9 2 - Moses Mendelssohn* (1729-1786). Moses Mendels- sohn was the son of a Jewish teacher and author, of Dessau. He went to Berlin at the age of fourteen, and in the face of many and great difficulties gained a livelihood (as a private teacher, and as a book-keeper and manager of a silk estab- lishment), carried on his studies, and won the recognition of thinkers and scholars. Early educated as a Jew, he was always at heart a Jew, and labored most nobly for the eleva- tion of his race, translating portions of the Old Testament 1 See Erdmann, 300, II. 2 Zeller, Erdmann, Noack. MOSES MENDELSSOHN. 26 1 into German, preparing a Jewish ritual, championing the cause of free thought and universal toleration, and empha- sizing certain central truths of universal religion. In the formation of his philosophical opinions he was much in- fluenced by personal intercourse with Lessing and Nicolai', both pronounced Illuminationists, and by a study of the works of Locke, Shaftesbury, Hutcheson, the Scotch school, Rousseau, Spinoza, Leibnitz, and Wolff, nearly all thinkers of a rationalistic type, and instrumental in bringing about the philosophical Illumination throughout Germany in the eighteenth century. Works. Works of Mendelssohn are : " Philosophische Gesprache " (Philosophical Dialogues), (1755) ; " Briefe liber die Empfindungen " (Letters on the Sensations), ( I 755) > "Phsedon, oder iiber die Unsterblichkeit der Seele"(Phaedo, or on the Immortality of the Soul), (1767) ; " Morgenstunden, oder Vorlesungen iiber das Dasein Gottes " (Morning Hours, or Lectures on the Existence of God), (1785). Philosophy. The only worthy end of human endeavor is the happiness and perfection of human individuals. " Humanity " is a mere dead, fixed abstraction. " Science," as such merely, is likewise an empty abstraction. The prime requisite for the attainment of human happiness is a knowledge of human nature, which is gained only by a care- ful psychological investigation. This investigation must be conducted, first of all, observation-wise ; reason (the rea- soning faculty) of itself is liable to err, and must be con- trolled by the more primitive understanding, whose material is sensations and intuitions. The final criterion of truth is practical need, the heart. Between (and co-ordinate with) cognition and desire lies feeling, which is either pleasurable or painful. A pleasurable feeling results from the idea of perfection, a painful one from the opposite. A feeling produced by perfection in a sensible form is a sensation of sensible beauty. The impulse towards the realization of the idea of perfection is the fundamental impulse in human 262 A HISTORY OF MODERN PHILOSOPHY. nature, and the highest law of our will. Stated as an injunc- tion, this law is : " Make the inner and outer condition of thy- self and others as faultless as thou canst." Indispensable for the fulfilment of this injunction and the realization of the idea of perfection is a rational faith in God, in the divine government of the world, and in the immortality of the soul. Now, the existence of God follows for us from the idea of the most perfect being : the idea is self-contradictory unless God be. The being of God follows, further, from the con- tingent nature of the world. That the soul is immortal follows from such considerations as that : Nature knows no real annihilation; a rational being, striving by the ne- cessity of its nature towards perfection, cannot reasonably be hindered in its destiny ; the rational necessity of retribu- tion is not satisfied in the present existence ; without the hope of immortality human life must be a life of stupefac- tion and despair. But if the soul endures, so must its chief attributes, thought and will; and its existence must be a happy one, since it is impossible that God, the perfect being, could destine it for eternal wretchedness. These principles relative to human happiness, God, and immor- tality are for Mendelssohn almost, if not quite, axiomatic. Metaphysics he deems to have every whit the evidence, /'. ) of implicit confidence in human, reason ; the other of ^ doubt and distrust of human reason. Neither dogmatism nor scepticism for these are the two paths proves its own assertions or absolutely disproves those of the other. There remains a third way ; namely, to investigate and sur- vey to "criticize" the faculty of human reason as a faculty for a priori knowledge of that which transcends mere experience ; and this to the end that we may know how to avoid the subreptions of reason and the illusions springing therefrom. Philosophy, that is to say, is, first of all, instead of dogmatism (Leibnitzo-Wolffism) or scepti- cism (Humism), "criticism." After criticism has done its work, metaphysics, if criticism shall show it to be possible, begins. Now, human reason i. e. pure, non-empirical, human reason has the three branches of theoretical reason, practical reason, and the faculty of judgment inter- mediate between the two former ; and the critique of hu- man reason is a critique of theoretical reason, a critique of practical reason, and a critique of the faculty of judgment. 3l8 A HISTORY OF MODERN PHILOSOPHY. The Critique of Pure Reason : Introduction ; Problem of the Critique of Pure Reason. " Though all our knowl- edge begins with experience, it does not follow that there- fore it all derives from experience." 1 There is, in fact, an element in knowledge that is in a manner inde- pendent of experience, an element that may properly be designated as a priori, in contradistinction to an element deriving immediately from experience itself, an a pos- teriori element. Every proposition of mathematics, for example, possesses a necessity and universality character- istic of a priori knowledge alone. 2 And, in physics, such a proposition as that every change has a cause, is mani- festly universal and necessary, i.