The Critique of Judgment begins with an account of beauty. The initial issue is: what kind of judgment is it that results in our saying, for example, ‘That is a beautiful sunset’. Kant argues that such aesthetic judgments (or ‘judgments of taste’) must have four key distinguishing features. First, they are disinterested, meaning that we take pleasure in something because we judge it beautiful, rather than judging it beautiful because we find it pleasurable. The latter type of judgment would be more like a judgment of the ‘agreeable’, as when I say ‘I like doughnuts’.

Second and third, such judgments are both universal and necessary. This means roughly that it is an intrinsic part of the activity of such a judgment to expect others to agree with us. Although we may say ‘beauty is in the eye of the beholder’, that is not how we act. Instead, we debate and argue about our aesthetic judgments – and especially about works of art -and we tend to believe that such debates and arguments can actually achieve something. Indeed, for many purposes, ‘beauty’ behaves as if it were a real property of an object, like its weight or chemical composition. But Kant insists that universality and necessity are in fact a product of features of the human mind (Kant calls these features ‘common sense’), and that there is no objective property of a thing that makes it beautiful.

Fourth, through aesthetic judgments, beautiful objects appear to be ‘purposive without purpose’ (sometimes translated as ‘final without end’). An object’s purpose is the concept according to which it was made (the concept of a vegetable soup in the mind of the cook, for example); an object is purposive if it appears to have such a purpose; if, in other words, it appears to have been made or designed. But it is part of the experience of beautiful objects, Kant argues, that they should affect us as if they had a purpose, although no particular purpose can be found.

via:

http://www.iep.utm.edu/kantaest/

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