Lucretia Mott’s Quaker speeches and other writings are examined to show that her contributions to political theory are shaped by a radically antidogmatic worldview rooted in her progressive religious faith, an unwavering commitment to autonomy for all people, and an egalitarian conception of power. Mott proposes a dialectical, self-reflective, critical approach that serves as the basis of political citizenship. By exposing the hidden sources of inequality, oppression, and injustice, her approach empowers human beings to shape an egalitarian, voluntarist political system. This in turn allows Mott to argue for abolitionism and expanding women’s rights, including suffrage. Moreover, like Sarah Grimké, Mott also reflects important aspects of early Quaker constitutionalism by emphasizing the importance of human reason guided by the inner light and the role of deliberation in fashioning a government based on authentic consent.