Date: 1781, second ed. 1787

"This schematism of our understanding in regard to phenomena and their mere form, is an art, hidden in the depths of the human soul, whose true modes of action we shall only with difficulty discover and unveil."

— Kant, Immanuel (1724-1804)

Date: 1781, second ed. 1787

"Thus much only can we say: 'The image is a product of the empirical faculty of the productive imagination--the schema of sensuous conceptions (of figures in space, for example) is a product, and, as it were, a monogram of the pure imagination a priori, whereby and according to which images first...

— Kant, Immanuel (1724-1804)

Date: 1781, second ed. 1787

"They learned that reason only perceives that which it produces after its own design; that it must not be content to follow, as it were, in the leading-strings of nature, but must proceed in advance with principles of judgement according to unvarying laws, and compel nature to reply its questions."

— Kant, Immanuel (1724-1804)