How the aesthetic imperative, i.e. the necessities of satisfactory shape-contemplation, qualifies and deflects the pursuit of such non-aesthetic aims of art can be shown by comparing, for instance, the mere audible devices for conveying conventional meaning and producing and keeping up emotional conditions, viz. the hootings and screechings of modern industrialism no less than the ritual noises of savages, with the arrangements of well constituted pitch, rythm, tonality and harmony in which military, religious or dance music has disguised its non-aesthetic functions of conveying signals or acting on the nerves. Whatever is unnecessary for either of these motives (or any others) for making a noise, can be put to the account of the desire to avoid ugliness and enjoy beauty. But the workings of the aesthetic imperative can best be studied in the Art of the visual-representative group, and especially in painting, which allows us to follow the interplay of the desire to be told (or tell) _facts about things_ with the desire to _contemplate shapes,_ and to contemplate them (otherwise we should _not_ contemplate!) with sensuous, intellectual and empathic satisfaction. This brings us back to the Third Dimension, of which the possession is, as have we seen, the chief difference between _Things,_ which can alter their aspect in the course of their own and our actions, and _Shapes,_ which can only be contemplated by our bodily and mental eye, and neither altered nor thought of as altered without more or less jeopardising their identity. I daresay the Reader may not have been satisfied with the reference to the locomotor nature of cubic perception as sufficient justification of my thus connecting cubic existence with Things rather than with Shapes, and my implying that aesthetic preference, due to the sensory, intellectual and empathic factors of perception, is applicable only to the two other dimensions. And the Reader's incredulity and surprise will have been all the greater, because recent art-criticism has sedulously inculcated that the suggestion of cubic existence is the chief function of pictorial genius, and the realisation of such cubic existence the highest delight which pictures can afford to their worthy beholder. This particular notion, entirely opposed to the facts of visual perception and visual empathy, will repay discussion, inasmuch as it accidentally affords an easy entrance into a subject which has hitherto presented inextricable confusion, namely the relations of _Form_ and _Subject,_ or, as I have accustomed the Reader to consider them, the _contemplated Shape_ and the _thought-of Thing._