So much of every art is an expression of the subconscious that it seems to me most of all the important qualities are put there unconsciously, and little of importance by the conscious intellect. But these are things for the psychologist to untangle.
In his letter to Charles H. Sawyer, October 29, 1939; as quoted in full in "Edward Hopper", Lloyd Goodrich; New York, Harry N. Abrams, 1971, p. 164 - 1911 - 1940 (Art)