Some affirm, but others deny, that works of fine art, or at any rate certain sorts of them, should be true (T) or probable (P). This is the question which I investigate in the present essay. It has been debated by philosophers from Plato on, and much can still be learnt from earlier writers, particularly Aristotle. But I have found some recent discussions especially helpful; namely, what Strawson and Hart say about and in connexion with presupposition; Hospers' and Harris' remarks about truth-to and plausibility respectively; and Beardsley's treatment of these matters in his admirable survey of the problems of aesthetics.