The ego is divided into two parts: the ego itself and the super-ego (), or the ego-ideal () (34). Although Freud seems never to argue for the existence of a super-ego in The Ego and the Id (save to reference one of his earlier works in a footnote), we may consider a need for the super-ego implicit in Freud's previous arguments. Indeed, the super-ego is the solution to the mystery raised in the first chapter—the unconscious part of the ego, the part that acts in a repressive capacity.