No one has, I think, ever called Art "the handmaid of Science." There is, indeed, no need to establish a hierarchy. Yet in a sense the converse is true and Science is the handmaid of Art. Art is only practicable as we have seen, when it is possible safely to cut off motor-reactions. By the long discipline of ritual man accustomed himself to slacken his hold on action, and be content with a shadowy counterfeit practice. Then last, when through knowledge he was relieved from the need of immediate reaction to imminent realities, he loosed hold for a moment altogether, and was free to look, and art was born. He can never quit his hold for long; but it would seem that, as science advances and life gets easier and easier, safer and safer, he may loose his hold for longer spaces. Man subdues the world about him first by force and then by reason; and when the material world is mastered and lies at his beck, he needs brute force no longer, and needs reason no more to make tools for conquest. He is free to think for thought's sake, he may trust intuition once again, and above all dare to lose himself in contemplation, dare to be more and more an artist. Only here there lurks an almost ironical danger. Emotion towards life is the primary stuff of which art is made; there might be a shortage of this very emotional stuff of which art herself is ultimately compacted. Science, then, helps to make art possible by making life safer and easier, it "makes straight in the desert a highway for our God." But only rarely and with special limitations easily understood does it provide actual material for art. Science deals with abstractions, concepts, class names, made by the intellect for convenience, that we may handle life on the side desirable to us. When we classify things, give them class-names, we simply mean that we note for convenience that certain actually existing objects have similar qualities, a fact it is convenient for us to know and register. These class-names being _abstract_--that is, bundles of qualities rent away from living actual objects, do not easily stir emotion, and, therefore, do not easily become material for art whose function it is to express and communicate emotion. Particular qualities, like love, honour, faith, may and _do_ stir emotion; and certain bundles of qualities like, for example, motherhood tend towards personification; but the normal class label like horse, man, triangle does not easily become material for art; it remains a practical utility for science.