Özet:
In order for Kant's criticism of metaphysics which he calls 'speculative' to be valid and in order for his attempt to establish metaphysics as a science to be successful, experience which, in critical thought, determines the limits of knowing activity of human beings should be constituted within the framework of this thought. Kant's conception of experience is formed by preserving some aspects of that of Leibniz, However, since Kant's critical thought attempts to cancel Leibniz's conception of substance which is the basis of experience in Leibniz, experience cannot be constituted within the framework of critical thought.