David Hume on Art and Taste"The Epicurean" and "Of the Standards of Taste", in Essays Moral, Political, Literary (1748), Essays 15 and 23.
It is a great mortification to the vanity of man, that his utmost art and industry can never equal the meanest of nature’s productions, either for beauty or value. Art is only the under-workman, and is employed to give a few strokes of embellishment to those pieces, which come from the hand of the master. … Art may make a suit of clothes; but nature must produce a man. … All sentiment is right; because sentiment has a reference to nothing beyond itself, and is always real, wherever a man is conscious of it. But all determinations of the understanding are not right; because they have a reference to something beyond themselves, to wit, real matter of fact; and are not always conformable to that standard. … Beauty is no quality in things themselves: It exists merely in the mind which contemplates them; and each mind perceives a different beauty. One person may even perceive deformity, where another is sensible of beauty; and every individual ought to acquiesce in his own sentiment, without pretending to regulate those of others.