ACKNOWL EDGMENTS vii list of illustrations ix introduction xi 1.ART AS IMITATION:PLATO 2.ART AS COGNITION:ARISTOTLE 3.ART AS REPRESENTING NATURE;LEON BATTISTA ALBERTI 4.ART AS OBJECT OF TASTE:DAVID HUME 5.ART AS COMMUNICABLE PLEASURE:IMMANUEL KANT 6.ART AS REVELATION:ARTHUR SCHOPENHAUER (SO ON)