Definitions HQ

A Schema (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠nothing but an a priori determination of time according to rules — the categories translated into the language of time.

A Schema (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠what the senses supply in place of the pure concept in concreto — the rule for its use, whose object is found only in experience.

A Schema (n.) both ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠realizes and restricts the category: it gives the concept a world to apply to, and in the same stroke fences it inside sensibility.

A Schema (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠neither thought nor sensation: invisible like a thought, image-like like a sensation — whoever draws a house draws a particular one, yet could not without the house before the mind's eye.

A Schema (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠not an image but a method: five dots in a row are an image of five, but thinking a number in general — five or a hundred — is the representation of a procedure for giving a concept its image.

A Schema (n.) of ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠a pure concept of the understanding can never be brought to any image at all; it is only the pure synthesis according to a rule, a transcendental product of imagination determining inner sense in time.