| Those learned men who are a terror to children and an ignominious sight in lovers' eyes, all those butts of a traditional humour where there is something of the wisdom of peasants, are mathematicians, theologians, lawyers, men of science of various kinds. They have followed some abstract reverie, which stirs the brain only and needs that only, and have therefore stood before the looking-glass without pleasure and never known those thoughts that shape the lines of the body for beauty or animation, and wake a desire for praise or display.
There are two pictures of Venice side by side in the house where I am writing this, a Canaletto that has little but careful drawing, and a not very emotional pleasure in clean bright air, and a Franz Francken, where the blue water, that in the other stirs so little, can make one long to plunge into the green deepth where a cloud shadow falls. Neither painting could move us at all, if our thought did not rush out to the edges of our flesh, and it is so with all good art, whether the Victory of Samothrace which reminds the soles of our feet of swiftness, or the Odyssey that would send us out under the salt wind, or the young horsemen on the Parthenon, that seem happier than our boyhood ever was, and in our boyhood's way. Art bids us touch and taste and hear and see the world, and shrinks from what Blake calls mathematic form, from every abstract thing, from all that is of the brain only, from all that is not a fountain jetting form the entire hopes, memories, and sensations of the body. Its morality is personal, knows little of any general law, has no blame for Little Musgrave, no care for Lord Barnard's house, seems lighter than a breath and is yet hard and heavy, for if a man is not ready to face toil and risk, and in all gaiety of heart, his body will grow unshapely and his heart lack the wild will that stirs desire. It approved before all men those that talked or wrestle of tilted under the walls of Urbino, or sat in the wide window-seats discussing all things, with love ever in their thought, when the wise Duchess ordered all, and the Lady Emilia gave the theme.
---William Butler Yeats
from The Cutting of An Agate | 
