" But Freud was also wary of art's tendency to confuse reality and unreality. If Leonardo was a neurotic, then he needed to be cured. Freud, like his near-contemporary Wölfflin, was biased towards order and composition: composition of the artwork, composition of the personality. This bias supported a sequestering and marginalization of avant-garde art, whose basic principle was mistrust of composition. But then Freud was not an avant-garde thinker. Like Aby Warburg, he saw the potential for disorder in the human personality but sought to contain that potential. "

― , A History of Art History