Illusions commend themselves to us because they save us pain and allow us to enjoy pleasure instead. We must therefore accept it without complaint when they sometimes collide with a bit of reality against which they are dashed to pieces.

Psychoanalysis remains influential within psychiatry and across the humanities. His analysis of his own and his patients dreams as wish-fulfilments provided him with models for the clinical analysis of symptom formation and the mechanisms of repression as well as for further elaboration of his theory of the unconscious as an agency disruptive of conscious states of mind. Auden wrote in a poem dedicated to him: "to us he is no more a person / now but a whole climate of opinion / under whom we conduct our different lives".