We have seen the artistic spirit working, first in the delightful and technical sphere of language, the sphere of expression as opposed to subject, then controlling the imagination of the poet in dealing with his subject. And now I would point out to you its operation in the choice of subject. The recognition of a separate realm for the artist, a consciousness of the absolute difference between the world of art and the world of real fact, between classic grace and absolute reality, forms not merely the essential element of any aesthetic charm but is the characteristic of all great imaginative work and of all great eras of artistic creation--of the age of Phidias as of the age of Michael Angelo, of the age of Sophocles as of the age of Goethe. Art never harms itself by keeping aloof from the social problems of the day: rather, by so doing, it more completely realises for us that which we desire. For to most of us the real life is the life we do not lead, and thus, remaining more true to the essence of its own perfection, more jealous of its own unattainable beauty, is less likely to forget form in feeling or to accept the passion of creation as any substitute for the beauty of the created thing. The artist is indeed the child of his own age, but the present will not be to him a whit more real than the past; for, like the philosopher of the Platonic vision, the poet is the spectator of all time and of all existence. For him no form is obsolete, no subject out of date; rather, whatever of life and passion the world has known, in desert of Judaea or in Arcadian valley, by the rivers of Troy or the rivers of Damascus, in the crowded and hideous streets of a modern city or by the pleasant ways of Camelot--all lies before him like an open scroll, all is still instinct with beautiful life. He will take of it what is salutary for his own spirit, no more; choosing some facts and rejecting others with the calm artistic control of one who is in possession of the secret of beauty.