This, then, is the rough balance sheet. Equality of id and ego have long become part and parcel of psychoanalytic thought and psychoanalysts try to distinguish between drive and ego aspect in various psychic activities, without much thought that it could be otherwise. All the time, however, whether teleological concepts are ultimately satisfactory remains in doubt as it always has been and, I am afraid, is likely to remain.

Id and ego are handled today in a more schematic fashion than Freud had intended them to be. The revision of the theory of (neurotic) anxiety and the realization of a variety of defense