We should rewrite our histories, for all men, certainly all imaginative men, must be for ever casting forth enchantments, glamours, illusions; and all men, especially tranquil men who have no powerful egotistic life, must be continually passing under their power. Our most elaborate thoughts, elaborate purposes, precise emotions, are often, as I think, not really ours, but have on a sudden come up, as it were, out of hell or down out of heaven. The historian should remember, should he not? angels and devils not less than kings and soldiers, and plotters and thinkers. What matter if the angel or devil, as indeed certain old writers believed, first wrapped itself with an organized shape in some man’s imagination? what matter ‘if God himself only acts or is in existing beings or men,’ as Blake believed? we must none the less admit that invisible beings, far wandering influences, shapes that may have floated from a hermit of the wilderness, brood over council-chambers and studies and battle-fields. We should never be certain that it was not some woman treading in the wine-press who began that subtle change in men’s minds, that powerful movement of thought and imagination about which so many Germans have written; or that the passion, because of which so many countries were given to the sword, did not begin in the mind of some shepherd boy, lighting up his eyes for a moment before it ran upon its way.

—W.B. Yeats