 Kant and Hegel attempted to show that the distinctive features of marriage could be explained and justified by foundational normative principles. In contrast, early feminists argued that marital hierarchy was simply an unjust remnant of a pre-modern era. John Stuart Mill (1806–1873) argued that women’s subordination within marriage originated in physical force—an anomalous holdover of the ‘law of the strongest’. Like Wollstonecraft in her 1792 A Vindication of the Rights of Woman, Mill compared marriage and slavery: under coverture wives had no legal rights, little remedy for abuse, and, worse, were required to live in intimacy with their ‘masters’. This example of an inequality based on force had persisted so long, Mill argued, because all men had an interest in retaining it. Mill challenged the contractual view that entry into marriage was fully voluntary for women, pointing out that their options were so limited that marriage was “only Hobson’s choice, ‘that or none’” (The Subjection of Women, 1869, 29). He also challenged the view that women’s nature justified marital inequality: in light of different socialization of girls and boys, there was no way to tell what woman’s nature really was. Like Wollstonecraft, Mill described the ideal marital relationship as one of equal friendship (Abbey and Den Uyl, 2001). Such marriages would be “schools of justice” for children, teaching them to treat others as equals. But marital inequality was a school of injustice, teaching boys unearned privilege and corrupting future citizens. The comparison of marriage with slavery has been taken up by more recent feminists (Cronan 1973), as has the argument that marital injustice creates unjust citizens (Okin 1994).