Reflecting the decline in college courses on Western Civilization, Marshall Sahlins aims to accelerate the trend by reducing ''Western Civ'' to about two hours. He cites Nietzsche to the effect that deep issues are like cold baths; one should get into and out of them as quickly as possible. The deep issue here is the ancient Western specter of a presocial and antisocial human nature: a supposedly innate self-interest that is represented in our native folklore as the basis or nemesis of cultural order.Yet these Western notions of nature and culture ignore the one truly universal character of human sociality: namely, symbolically constructed kinship relations. Kinsmen are members of one another: they live each other's lives and die each other's deaths. But where the existence of the other is thus incorporated in the being of the self, neither interest, nor agency nor even experience is an individual fact, let alone an egoistic disposition. ''Sorry, beg your pardon,'' Sahlins concludes, ''Western civilization has been built on a perverse and mistaken idea of human nature.''