In only a single field of our civilization has the omnipotence of thought been retained, and that is the field of art. Only in art does it still happen that a man who is consumed by desires performs something resembling the accomplishment of those desires and that what he does in play produces emotional effects—thanks to artistic illusion—just as though it were something real. People speak with justice of the “magic of art” and compare artists to magicians. But the comparison is perhaps more significant than it claims to be. There can be no doubt that art did not begin as art for art’s sake. It worked originally in the service of impulses which are for the most part extinct today.
Freud, Sigmund. Totem and Taboo: Some Points of Agreement between the Mental Lives of Savages and Neurotics. The Standard Edition of the Complete Psychological Works of Sigmund Freud. New York: W.W. Norton, 1989, 113.