"When you have found a sign, turn it round and round, look at it from the front and from the side, take a three-quarter view and a foreshortened view; remove it and note what form the memory of its appearance takes in its place; observe from which angle it looks like a horse, and from which like the molding on your ceiling; see when it suggests the aspect of a ladder, or a plumed helmet; in which position it resembles Africa, which itself resembles a huge heart . . ."
—Giorgio de Chirico, Hebdomeros