We analyse in this article the theory of knowledge by Arthur Schopenhauer included in his dissertation On the Fourfold Root of the Principle of Sufficient Reason (1813), his essay On Vision and Colours (1816), the two first books of The World as Will and Representation (1819), and the appendix at this work, intitled Criticism of the Kantian Philosophy. We have here in mind the relation of Schopenhauer with the previous philosophies (especially that by Kant) and the establishment of his intuition of world as Will based in an epistemology of Kantian sources.
Schopenhauer; knowledge; intuition; Reason; Will