For this characteristic remoteness from affairs the artist is sometimes reproached by those who pin their faith to material things. Such are not aware that for the artist the only reality is the life of the spirit. The artist, as Carlyle says of the Man of Letters, "lives in the inward sphere of things, in the True, Divine and Eternal, which exists always, unseen to most, under the Temporary, Trivial: his being is in that." Temperament constitutes the whole moral nature of the artist. "With a great poet," says Keats, "the sense of beauty overcomes every consideration, or rather obliterates all consideration." It is the standard which measures the worth of any act. It is conscience, too; for the functions performed by conscience in the normal moral life of the man of action are fulfilled by the artist's devotion to his ideal; his service to his art is his sole and sufficient obligation. And where the man of action looks to find his rewards in the approval of his fellow men, the artist cares to please himself. The very act of expressing is itself the joy and the reward. To this truth Keats again stands as witness: "I feel assured," he says, "I should write from the mere yearning and fondness I have for the beautiful, even if my night's labours should be burnt every Morning and no eye ever shine upon them." And still again: "I value more the privilege of seeing great things in loneliness than the fame of a prophet." Not that the artist does not crave appreciation. His message fails of completeness if there is no ear to hear it, if it does not meet a sympathy which understands. But the true artist removes all shadow of petty vanity and becomes, in Whitman's phrase, "the free channel of himself." He is but the medium through whom the spirit of beauty reveals itself; in thankfulness and praise he but receives and transmits. That it is given him to see beauty and to interpret it is enough. It is by virtue of his power to feel that the artist is able to apprehend beauty; his temperament is ever responsive to new harmonies. By force of his imagination, which is one function of his temperament, he sends his spirit into other lives, absorbs their experience and makes it his own, and ultimately identifies himself with world forces and becomes creator. In a lyric passage in a letter Keats exclaims:--