The document discusses the evolution of cultural identities and the postmodern self. It outlines 3 concepts of the subject: 1) The Enlightenment subject defined by reason and a stable inner core. 2) The sociological subject formed in relation to others. 3) The postmodern subject with no unified self, assuming different identities in different contexts. It then examines five ruptures that contributed to the de-centered postmodern subject, including Marxism, psychoanalysis, feminism, language/discourse, and Foucault's writings on power, discourse and subject positions.