id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-358 Critique of Pure Reason - Wikipedia .html text/html 17608 1471 62 Critique of Pure Reason (German: Kritik der reinen Vernunft; 1781; second edition 1787) is a book by the German philosopher Immanuel Kant, in which the author seeks to determine the limits and scope of metaphysics. The central problem of the Critique is therefore to answer the question: "How are synthetic a priori judgements possible?"[7] It is a "matter of life and death" to metaphysics and to human reason, Kant argues, that the grounds of this kind of knowledge be explained.[7] In order to answer criticisms of the Critique of Pure Reason that Transcendental Idealism denied the reality of external objects, Kant added a section to the second edition (1787) titled "The Refutation of Idealism" that turns the "game" of idealism against itself by arguing that self-consciousness presupposes external objects. ./cache/en-wikipedia-org-358.html ./txt/en-wikipedia-org-358.txt