In his late work on Christianity, Talcott Parsons obviously built upon the writings of both Durkheim and Weber. While he departed from the idea that increasing differentiation of the system of action did not have to threaten the unity of the system as a whole, his emphasis on structural differentiation was also complemented by one on value integration. He believed that, especially in the New World, religion (i.e. Christianity) has gradually become able to impose its definition of the situation in (...) highly different, highly heterogeneous contexts of action. In this paper, I reconstruct Parsons’ historical-sociological analyses of the relation between Christianity and modern society. I discuss how Parsons appropriated the writings of Durkheim and Weber – in ways which did not fully exploit the potential of some of these writings. I suggest some alternatives, which rely less on a concern with value integration (Durkheim) but more on one with the differentiation of meaning systems (Weber). (shrink)