Introduction - Aesthetic judgements, aesthetic principles, and aesthetic properties - Aesthetic essence - The acquaintance principle - The intersubjective validity of aesthetic judgements - The pure judgement of taste as an aesthetic reflective judgement - Understanding music - The characterization of aesthetic qualities by essential metaphors and quasi-metaphors - Musical movement and aesthetic metaphors - Aesthetic realism and emotional qualities of music - On looking at a picture - The look of a picture - Wollheim on correspondence, projective properties, and expressive perception -- Wittgenstein on aesthetics.