This chapter discusses the formation of high classical Roman property law, which displays what Orlando Patterson calls a master/slave “idiom of power.” It focuses on the emergence of the term dominus, “master,” as the ordinary word for “owner.” The rise of the dominus was once the topic of extensive analysis and controversy, and it figured prominently in the ideologies of Communism and Fascism. It has, however, been forgotten by contemporary scholars. The chapter sets out to revive this forgotten topic. Drawing on Roman social history, the chapter argues that the appearance of the new terminology of the dominus in classical law can be linked to important social changes in the nature of Roman elite power. The chapter closes by arguing that Roman property law bore a kinship to classical Greco-Roman religion, which was marked by the “symbolism and ideology of the paradigmatic hunter.”