  Marcuse introduces two new terms to distinguish between the biological vicissitudes of the instincts and the social.  Basic repression refers to the type of repression or modification of the instincts that is necessary “for the perpetuation of the human race in civilization” (Marcuse 1955: 35). At this level, repression does not lend itself to domination or oppression. Surplus repression, on the other hand, refers to “the restrictions necessitated by social domination” (Marcuse 1955: 35). The purpose of surplus repression is to shape the instincts in accordance with the present “performance principle” which is “the prevailing form of the reality principle” (Marcuse 1955: 35).