Art, the artistic faculty, only became a philosophical problem in Greece after the sophistical movement and as a consequence of the Socratic dialectic. The historians of literature generally point to the origins of Greek Æsthetic in the first appearance of criticism and reflection upon poetical works, painting and sculpture; in the judgements pronounced on the occasion of poetical competitions, in the observations that were made as to the methods of the different artists, in the analogies between painting and poetry as expressed in the sayings attributed to Simonides and Sophocles; or, finally, in the appearance of that word which served to group together the various arts and to indicate in a certain way their relationship--the word mimesis or mimetic (μίμησις)--which oscillates between the meaning of "imitation" and that of "representation." Others make the origin of Æsthetic go back to the polemics which were conducted by the first naturalistic and moralistic philosophers against the tales, fantasies and morals of poets, and to the interpretations of the hidden meaning (υπόνοια), or, as the moderns call it, allegory, employed to defend the good name of Homer and of the other poets; finally, to the _ancient quarrel_ between philosophy and poetry, as Plato was afterwards to call it.[5] But, to tell the truth, none of these reflections, observations and arguments implied a true and proper philosophical discussion of the nature of art. Nor was the sophistical movement favourable to its appearance. For although attention was at that time certainly given to internal psychical facts, yet these were conceived as mere phenomena of opinion and feeling, of pleasure and pain, of illusion, whim or caprice. And where there is no true and no false, no good and no evil, there can be no question of beautiful and ugly, nor of a difference between the true and the beautiful or between the beautiful and the good. The most one has in that case is the general problem of the irrational and the rational, but not that of the nature of art, which assumes the difference between rational and irrational, material and spiritual, mere fact and value, to have been already stated and grasped. If, then, the sophistical period was the necessary antecedent to the discoveries of Socrates, the æsthetic problem could only arise after Socrates. And it did indeed arise with Plato, author of the first, or indeed of the only really great negation of art of which there remains documentary proof in the history of ideas. [Sidenote: _Plato's rigoristic negation._]