The Idea

§ 1631

The Idea is the adequate Notion, that which is objectively true, or the true as such. When anything whatever possesses truth, it possesses it through its Idea, or, something possesses truth only in so far as it is Idea. The expression 'idea' has often been employed in philosophy as in ordinary life for 'notion', indeed, even for a mere ordinary conception: 'I have no idea yet of this lawsuit, building, neighbourhood', means nothing more than the ordinary conception. Kant has reclaimed the expression Idea for the notion of reason. Now according to Kant, the notion of reason is supposed to be the notion of the unconditioned, but a notion transcendent in regard to phenomena, that is, no empirical use can be made of such notion that is adequate to it. The notions of reason are to serve for the comprehension of perceptions, the notions of the understanding for understanding them. But in fact, if the latter really are Notions, then they are Notions — they enable one to comprehend , and an understanding of perceptions by means of notions of the understanding will be a comprehension of them. ®