y\r- i^y^ A DICTIONARY PHILOSOPHY IN THE WORDS OF PHILOSOPHERS. EDITED, Mitb an 3ntroMiction, BY J. RADFORD THOMSON, M.A. PROFESSOR OF PHILOSOPHY IN NEW COLLEGE, LONDON, AND IN HACKNEY COLLEGE. ;UHI71ESITr) LONDON: REEVES AND TURNER, 196 STRAND. R. D. DICKINSON, FARRINGDON STREET. 1887. US60? PREFACE. The collection of passages from philosopliical writers which has formed the basis of this Dictionary was made by a collator of experience. "When, at the request of the Publisher, I examined the manuscript, it appeared to me that, whilst some authors were too fully represented, there was an inadequate representation of several important schools, and that some topics of moment were scarcely touched upon. I felt it necessary, in editing the volume and preparing it for the press, to deal somewhat freely with the material placed in my hands. Passages of undue length have in many instances been cut down. On the other hand, very many new quotations have been introduced from writers of recognised merit and influence. More particularly, a fair representation has been secured of the teaching of (i) the physiological and evolutional psychologists of our own time, and (2) the ' rational idealists ' who have of late years taken so prominent a position in British Philosophy. The material has also been completely re-arranged. In carrying out this work I have been efficiently assisted by the Rev. Alfred Goodall, who has, under my guidance, made extracts comprising a large portion of the passages contained in this volume. He has also aided me in verifying quotations, and in reading the proofs ; and the Indexes are entirely his work. To him accordingly my appreciative acknowledgments are due. The revived and extended interest in philosophical studies leads to the hope that a Dictionary upon the plan of this work may be acceptable and useful. The leading topics of psychological, metaphysical, and ethical interest will be found elucidated in this volume by passages from authors of acknowledged position, but belonging to very various schools of thought. The quotations are, for the most part, taken from the works of modern writers, and from books in the English lan- guage. At the same time, many passages are inserted which have been taken from translations into English of classical works, and of works by modern French and PREFACE. German authors. That learned readers who may consult this volume will find many books and even authors omitted that it would have been desirable to include, may be expected. Yet in this modest attempt, the endeavour has been, consistently with the limits of space, to give a fair, impartial, and comprehensive representation of different schools and tendencies of thought. In a comparatively small number of cases the full references have not been given. Usually the references are, in the case of standard works, to book and chapter, or to lecture or essay. But in the case of works where one edition may be expected to be commonly consulted, the references are to volume and page. In this matter many difficulties have been encountered. A few quotations have been allowed to stand which have a literary rather than a strictly philosophical bearing; and interest. And in some cases it has been thought more useful to present th& opinions of a writer in the summary of an historian than in the language of the writer himself It is hoped that the copious Indexes appended to this book will render it useful to students. The Alphabetical arrangement would have been altogether impracticable ; but by referring to the Indexes the reader may gain all the advan- tages of consulting a Dictionary arranged upon the ordinary plan. The Introduction has been written for the sake of beginners in philosophical studies, with the view of affording to such readers a general survey of the field of thought before them. It is hoped that no apology is needed for the copious use here made of the works of several living authors, both British and American. Some readers may, I trust, be led, by consulting this Dictionary, to undertake the study of writers the quality of whose mind they have tasted in these pages. J. R. T. London, March 1887 ,, , '^ OP THR "^ INTRODUCTION. I. THE DEFINITION OF PHILOSOPHY. Few words are more ambiguous than the word ' Philosopliy.' It comes to us from the Greeks, by whom it was at first used in its etymological sense as signi- fying the love of wisdom. The general designation ' Philosophy ' was deemed by the Stoics to include the three sciences : Logic, the science of Thought ; Physics, the science of Nature ; and Ethics, the science of Conduct. In modem times the term ' Philosophy' has been and is employed in several different significations. It is popularly used to denote practical wisdom and self- command ; as when a man is said to bear misfortune with ' philosophic calmness,' or ' like a philosopher.' It is also applied in cases where science would be more suitable ; as when persons speak of ' the philosophy of growth,' or ' the philosophy of the tides.' Usage sanctions a similar employment of the term in the phrase ' natural philosophy,' which designates a certain department of physical science. Such applications as these may be dismissed as altogether loose and unimportant. Bacon divided all human knowledge into revealed theology and philosophy, including under the latter natural theology and natural philosophy, — the latter comprising both physics and metaphysics. A very extensive application of ' philo- sophy ' is still common, as may be seen in the classification of books in libraries. But the tendency has long been to employ this term in a more restricted sense. The most usual definition of Philosophy is ' the study and knowledge of first principles.' First principles may be taken as equivalent to unity amidst diversity, — to the causes or origins of all things, — to the universal, the necessary, the ultimate. In the apprehension of some thinkers, this definition is too vague. Thus Mr. Herbert Spencer endeavours to define philosophy more exactly as ' knowledge of the highest degree of generality;' 'Science is partially unified knowledge;' ' Philosophy is completely unified knowledge.' The Comtists or Positivists reject Philosophy, except as Anthropology or the science of man, and for them this science is twofold, including Biology and INTRODUCTION. Sociology. If man is to be studied otherwise than as a bodily organism, he must, according to this doctrine, be studied as he exists in society. At the other extreme from the Comtists are the Hegelians, in whose view the history of Philosophy is Philosophy. According to this school, the successive stages of systematised human thought form a philosophical unity; an organic whole has been, and is, developing and revealing itself in the long history of the philosophical evolution of intellectual humanity. There is a disposition among many contemporary writers to limit the term Philosophy to what is ordinarily called Metaphysics, to set the philosophical in antithesis to the scientific. Some Psychologists axe very anxious to avoid,— at all events to appear to avoid,— all philosophical controversy ; with what success every reader can judge. It does not appear practicable altogether to separate between the observations and generalisations of Psychology and the wider and higher truths or speculations of Philosophy in the sense of Metaphysics. It seems well in defining Philosophy to avoid the two extremes : on the one hand, to avoid including in this study the sum of human knowledge ; on the other hand, to avoid limiting Philosophy to Metaphysics. If we were to define it to be the study of the principles of liuman knowledge and conduct, it might seem that we were limiting Philosophy to Psychology and Ethics ; but such a definition, liberally interpreted, would surely include far more than these studies. Since, in order to understand what is known, we must to some extent understand the nature that knows, Philosophy investigates the laws of the human intellect, with whatever is subordinate to, or connected with it. Since we cannot be satisfied with knowing facts, but are constrained to ascend to generalisations and explanations, to bring what we know into relation of harmony, mutual dependence, and unity. Philosophy aims at discovering in the intelligible universe those mental bonds of system and causation, which give meaning and consistency to what would otherwise be incomprehensible. Since human life is in our view even more important tlian science. Philosophy investigates its hidden springs in the very structure of our nature, in our intuitions of right and of duty, in the constitution and relations of society. It has been well said : ' The business of Philosophy, in the true sense of the word, is to answer three questions — (l.) What can I know? (2.) What ought I to do? (3.) What may I hope for ? These are the highest questions which can interest human beings.' It may be objected that such a description of Philosophy makes it almost conterminous with science and with practice. This may be admitted, with the important qualification that there is a philosophical side to every intellectual pursuit, and even to all practical systems ; and that it is open for the student to determine how far he will concern himself with the scientific, how far with the philosophical aspect of the study which he cultivates. It is certain that our INTRODUCTION. intellectual and practical life suggests at every point questions which Science — iu the more limited sense of the term — does not profess or attempt to answer, which yet possess an interest for many minds, and a fascination for some. It cannot be overlooked, further, that knowledge and action alike prompt the mind to inquiry and to speculation, with regard to the Wisdom which is infinite, and the Righteousness which is unchanging and eternal. 11. THE DIVISIONS OF PHILOSOPHY. Premising that no system of terminology will meet with universal approval, we will endeavour to distribute the topics of philosophical study into several departments, designating them by terms more or less generally accepted. Psychology is the study of the natural history of mental phenomena, and of the generalisations which they yield. This designation has of late been much in favour. It is said that if studies of the class under consideration are to be prosecuted, this must be done upon a scientific and not upon a scholastic method. There are those who object to all metaphysics, who yet are ready to admit that anthropology, in order to be complete, must comprise more than a scientific description of man's bodily organs and functions. Anatomy and Physiology are only a part of the science of man ; a true Biology must comprise the mental and moral life of humaaity. Even those who regard man as only the most highly organised of animals, and thought as a function of the brain, will grant as much as this. It is then agreed that the special functions by which men are diffe- rentiated from brutes shall be studied, shall where possible be traced downwards to their roots in the cruder forms of animal life and sentience, and upwards to their highest developments in civilised and cultivated society. The knowledge thus reached may fairly be regarded as scientific, and its scientific character is not invalidated because it is enriched by observations upon man's social life in its varying phases. Psychology thus understood skirts the province of physiology ; for, in explaining the raw material of feeling and of knowledge, and the mech- anism of human activity, it is necessary to study the structure and function of nerve, both at the centres in spinal cord and encephalon, and at the periphery, especially as differentiated into the special senses. Whilst speculative or metaphysical philosophy has in many quarters been disparaged, the physical sciences have, during the present century, developed their stringent methods of inquiry and of verification, and have surprised the world by their results. There has been, at the same time, a growing disposition to study the phenomena known as psychical, and to apply to this study the INTRODUCTION. metliods which have been so successful elsewhere. In France, Auguste Comte, who scornfully repudiated metaphysics, nevertheless, by his great treatises, gave an impulse to the study of sociology, i.e., of human nature as traceable by its manifestations in the common life of humanity. In Germany, the most careful and delicate observations have been made, especially in elucidation of the pheno- mena of sensation and of movement. The modern German text-books on Psy- chology abound in generalisations thus attained, which, in some instances, are expressed in the form of mathematical laws. In our own country several manuals of Psychology have appeared, embodying the results of German research, and adding the fruits of independent observation. Similar manifestations of intellectual activity have not been wanting in the United States, in our Colonies, and in our Indian possessions. It is maintained by some writers on Psychology that it is possible to treat their theme without making metaphysical assumptions, or yielding to metaphysical predilections. Their treatises, however, furnish conspicuous examples of the unreasonableness of their professions, for they constantly involve metaphysical doctrine. Divided as is opinion upon questions of vital importance, it is natural that many Psychologists should desire to prosecute their observations, and to formulate their doctrines, without taking a side in controversy. The same prin- ciple actuates university examiners, who are anxious to test the knowledge of candidates, whilst steering clear of questions and difficulties which some regard as insoluble, and which others profess to solve by opposed methods and with con- flicting results. The consequence necessarily is that stress is laid upon matters of minor interest, and that matters of deep and permanent concern are kept in abeyance. Both writers and examiners sometimes lose sight of the fact that to ignore controversy is in some cases equivalent to taking a side. It is observable, however, that Mr. Ward, in his article in the Encyclopaedia Britannica, and Mr. Sully, in his Outlines, proceed upon the assumption of the mind's existence. At the same time that the prevalent tendency is to restrict the scope of Psychology, there appears to be a disposition in some quarters to enlarge its scope, and to make it a most comprehensive study. Thus Hamilton considered that Ontology or Metaphysics proper might be designated Inferential Psychology, and Mansel supposed a Eational Psychology which should frame definitions exhibiting the essential nature of the soul, &c. If such expansions be admitted, it is questionable whether any real advantage will attend the use of the term ' Psychology,' whether it will not be equally ambiguous with the familiar terms ' Metaphysics ' and ' Philosophy.' Logic is, by general consent, reckoned among the philosophical sciences. Its aim is to lay down the laws of the ratiocinative or discursive intellect. The processes of reasoning engaged the attention of the Greek thinkers ; and the main INTRODUCTION. features of deductive Logic, as known and taught to-day, were traced, with some- thino- like completeness, by the master-hand of Aristotle. As a valuable discipline of the mind, testing closeness of attention and keenness of intellectual discrimina- tion, Logic has continued to hold its place in the academic curriculum. Its territory lies, as it were, within a ring fence, and its compactness and succinctness have made it especially useful for the purpose of education. There was no doubt a time when Dialectic was over- rated. Logic has often been treated as an Art of disputation, and victory over an antagonist in argument, whether in law, religion, or opinion, is sure to be highly prized by minds of a certain order. But in the ratio in which truth is valued above victory, will dialectical skill be depreciated, and methods of discovery be cultivated in its place. If, however, Logic be regarded, as it should be, as an analysis of the mental processes involved in passing from judgment to judgment, its value is seen to be, not adventitious, but real. Certainly, the intellectual processes which Logic reveals in their formal simplicity, must ever be an interesting and valuable theme of study. But as knowledge is gained, not only by proceeding downwards from prin- ciples to facts, but by proceeding upwai-ds from facts to principles, it is evident that deductive Logic needs to be supplemented by a Logic which can deal with the processes of scientific discovery. Since the ancient and haphazard methods of investigating nature have been discarded, in favour of the strict methods of observation and experiment, of hypothesis and verification, discontent with the Aristotelian syllogism has been very common ; and the mistake has frequently been made of blaming that form of reasoning for not sufficing to ends which it does not contemplate. It has been said that the Logic of consistency is one thing, and the Logic of truth, of discovery, another and a different thing. Whether any kind of reasoning can dispense with the syllogistic principle, may be questioned. But it is certain that, in the formation of general laws and in the construction of major premises, there is need of a system specially adapted to this purpose, — a purpose which, to many scientific investigators, is all-important. From the time of Bacon a Logic has been desiderated which should serve the purpose of the Inductive student. In our own time, much has been done towards supplying this deficiency. Hitherto, scientific men have gone their own way, often trusting to the spontaneous guidance of acquired experience, and often scarcely able to explain the reasons of their successes and failures ; whilst logicians have gone their own way, heedless of the altered requirements of modern science, and incurring as a consequence the neglect of those who ought to be fellow- labourers in the same cause, — the establishment of sound and scientific knowledge. This reproach has now been rolled away, and that very largely through the genius and the patient diligence of English philosophers. The science of Inductive INTRODUCTION. Logic is the creation of our own age. If there is apparent incongruity in the combination of Deductive and Inductive methods of reasoning in the same treatise, there is satisfaction in knowing that by this combination much has been done to harmonise human knowledge, and to bring the various processes of the human intellect under the sway of acknowledged laws. Probably great advances have yet to be made in this direction. The incongruity referred to may disappear when a completer theory of the mutual relations of nature and intelligence is attained, when all knowledge is more clearly apprehended as the transcription by the human mind of the thoughts of the universal and Divine Intellect. Certain it is, if we may judge by the large number of able works on Logic which have been produced in recent years, that the study of Logic, as amended and amplified, as applied to the several realms of knowledge, is regarded with far more interest and respect than was the case a generation or two ago. Metaphysics is a term almost as ambiguous as is ' Philosophy ' itself. Originally used to designate the subjects treated by Aristotle 'after Physics' (to. jueTo. TO.