"In the living human being, completely filled with his soul, there dwells, like an alien guest, a weaker double, his self other than his psyche… whose realm is the world of dreams. When the other self is asleep, unconscious of itself, the double is awake and active.”—Erwin Rhode, Psyche: Seelencult und Unsterblichkeitsglaube der Griechen, qtd. in Otto Rank, The Double.