The _Poetics_ of Aristotle contains some hints on the subject of composition which entitle it to be mentioned in the present connexion. The deficiencies, even from a purely theoretical point of view, of this work, once pronounced infallible, have at last become so obvious that elaborate hypotheses have been constructed, according to which the recension handed down to us is a mere mutilated extract from the original treatise. Enough, however, remains to convince us that poetry was not, any more than eloquence, a subject with which Aristotle was fitted to cope. He begins by defining it, in common with all other art, as an imitation. Here, we at once recognise the spirit of a philosophy, the whole power and interest of which lay in knowledge; and, in fact, he tells us that the love of art is derived from the love of knowledge. But the truth seems to be that aesthetic enjoyment is due to an ideal exercise of our faculties, among which the power of perceiving identities is sometimes, though not always, included. That the materials of which every artistic creation is composed are taken from the world of our experience makes no difference; for it is by the new forms in which they are arranged that we are interested, not because we remember having met them in some natural combination already. Aristotle could not help seeing that this was true in the case of music at least; and he can only save his principle by treating musical effects as representations of passions in the soul. To say, however, that musical pleasure arises from a perception of resemblance between certain sounds and the emotions with which they are associated, would be an extremely forced interpretation; the pleasure is due rather to a sympathetic participation in the emotion itself. And when Aristotle goes on to tell us that the characters imitated in epic and dramatic poetry may be either better or worse than in ordinary life, he is obviously admitting other aesthetic motives not accounted for by his general theory. If, on the other hand, we start with ideal energising as the secret of aesthetic emotion, we can easily understand how an imaginary exaltation of our faculties is yielded by the spectacle of something either rising above, or falling below, the level on which we stand. In the one case we become momentarily invested with the strength put into action before our eyes; in the other, the consciousness of our own superiority amounts to a fund of reserve power, which _not_ being put into action, is entirely available for ideal enjoyment. And, if this be the correct view, it will follow that Aristotle was quite wrong when he declared the plot to be more important than the characters of a drama. The reason given for his preference is, even on the principles of his own philosophy, a bad one. He says that there can be plot without character-drawing, but never character-drawing without plot. Yet he has taught us elsewhere that the human soul is of