 Questions of the relation between love and marriage emerge from changing understandings of the role of marriage; in the early modern era, further fault lines appear as new understandings of human society conflict with the traditional structure of marriage. For Aristotle, Augustine, and Aquinas, marriage was unproblematically structured by sexual difference, and its distinctive features explained by nature or sacrament. But in the early modern era, as doctrines of equal rights and contract appeared, a new ideal of relationships between adults as free choices between equals appeared. In this light, the unequal and unchosen content of the marriage relationship raised philosophical problems. Thomas Hobbes (1588–1679) acknowledged that his arguments for rough equality among humans apply to women: “whereas some have attributed the dominion [over children] to the man only, as being of the more excellent sex; they misreckon in it. For there is not always that difference of strength, or prudence between the man and the woman, as that the right can be determined without war.” Nonetheless, Hobbes admits that men dominate in marriage, which he explains (inadequately) thus: “for the most part commonwealths have been erected by the fathers, not by the mothers of families” (Leviathan, 1651, Ch. 20; Okin 1979, 198–199, Pateman 1988, 44–50).