It is frequently argued that classical sociology, if not sociology as a whole, cannot provide any significant insight into globalization, primarily because its assumptions about the nation‐state, national cultures and national societies are no longer relevant to a global world. Sociology cannot consequently contribute to a normative debate about cosmopolitanism, which invites us to consider loyalties and identities that reach beyond the nation‐state. My argument considers four principal topics. First, I defend the classical legacy by arguing that classical sociology involved the study of ‘the social’ not national societies. This argument is illustration by reference to Emile Durkheim and Talcott Parsons. Secondly, Durkheim specifically dev...