Abstract

THE PURE INTUITIONS OF SPACE AND TIME and the pure concepts of understanding are the two basic elements in Kant's critical philosophy. Whereas his account of pure intuitions is relatively straightforward, his theory of categories is quite complicated. When he presents space and time as two forms of intuition, he never sees the need to prove that there are no other forms of intuition than these two. But when he presents his table of categories, he tries to prove its completeness in one of the most obscure chapters of the first Critique, known as the "Metaphysical Deduction." Kant complicates his picture of categories by claiming two different functions for them: the logical and the real. The obscurity surrounding the relation of these two functions is the chief obstacle for understanding the "Transcendental Deduction," perhaps the most controversial chapter of the Critique. He further aggravates the problem in the "Schematism," perhaps the most oracular chapter of the Critique, by producing a set of categories quite different from the original set given in the "Metaphysical Deduction."