The Possibility of the Thing and Itself 2006

"I understand by the transcendental idealism of all appearances the doctrine that they are all together to be regarded as mere representations and not as THINGS IN THEMSELVES, and accordingly that space and time are only sensible forms of our intuition, but not determinations given for themselves or conditions of objects as THINGS IN THEMSELVES.

- Immanuel Kant from "The Critique of Pure Reason"
(Guyer & Wood translation, 1998)