He (Kant) has the fortune … that subsequent systems are for the most part developments of seeds that can be more or less determinately demonstrated in his writings, even if from time to time inner deformations are concealed by the illusion of a luxurious abundance. Fichte’s idealism, which rests exclusively on the pure concept of the Ich; Schelling’s older identity-theory, which makes intellectual intuition the source of knowledge; Hegel’s dialectic; Herbart’s monadology, which is grounded on the concept of being as absolute positing and on the recognition of the given; notwithstanding the peculiarities of each of these thinkers, all these things bring to mind thoughts, questions, and problems that Kant either first moved clearly into the light of philosophical consideration, or without allowing them the least applicability for human thinking, designated them as possible sources of cognition for other intelligences, or finally held them as essential and necessary corrections of deeply rooted errors.