Full Idea
In the transcendental aesthetic we have undeniably proved that bodies are mere appearances of our outer senses, and not things in themselves.
Gist of Idea
We have proved that bodies are appearances of the outer senses, not things in themselves
Source
Immanuel Kant (Critique of Pure Reason [1781], B406-/A357)
Book Reference
Kant,Immanuel: 'Critique of Pure Reason', ed/tr. Guyer,P /Wood,A W [CUO 1998], p.420
A Reaction
This seems a strongly idealistic remark, which is a bit qualified when he talks of the existence of the unknowable 'noumenon' behind appearances, and he rejects idealism when he labels it a 'paralogism' at A367, preferring 'transcendental idealism'.