Full Idea
The 'Critique of Judgement' argues, then, not for the objective validity of aesthetic values, but for the fact that we must think of them as objectively valid.
Gist of Idea
Aesthetic values are not objectively valid, but we must treat them as if they are
Source
report of Immanuel Kant (Critique of Judgement I: Aesthetic [1790]) by Roger Scruton - Short History of Modern Philosophy §11.7
Book Reference
Scruton,Roger: 'A Short History of Modern Philosophy' [ARK 1985], p.160
A Reaction
The trouble with these transcendental arguments of Kant is that they render you powerless to discuss the question of whether values are actually objective. We are all trapped in presuppositions, instead of testing suppositions.