Chapter 3 begins the conceptual history of the nation where our current vocabulary originates, in classical Greece and Rome. It examines the conception of cultural-linguistic communities in the context of the two principal alternatives to the nation-state – city-state and empire. The chapter moves from Greek conceptions of ethnicity as depicted in Herodotus’ Histories to Cicero’s reflections on the relationship between national and political communities in the Roman Empire and concludes with an examination of the idea of the nation in the Vulgate, the late fourth-century translation of the Bible. The analysis shows that ethnos, gens, and natio referred to communities defined by descent, language, and geographical homeland but were not understood in a political sense. Moreover, Roman thinkers were not only acutely aware of the twofold loyalties to nation and polity; they also sought practical arrangements for accommodating diverse national groups within a single political order. The chapter discusses Roman ideas on citizenship, administrative subsidiarity, and legal pluralism.