Chapter 3 describes Grouchy’s thought during the first four years of the French Revolution. It explores both the philosophical foundations for and the results of the strong political and intellectual partnership that developed with her husband, Condorcet, from around 1790. Grouchy took advantage of the symbolic political power with which marriage was imbued in revolutionary discourse to use her own union as a microcosm of the polity she and Condorcet were advocating. They demonstrated that sentiment not only allowed individuals to reason rights, but created bonds that enabled independent people to work together for the advancement of political goals beyond their basis self-interest. This created the basis from which citizens could contribute to the creation of a just constitution. The state, in turn, had a central role in fostering the emotional faculties of the citizenry. Women, moreover, had an identical capacity for moral and political judgement as men. They made this argument both in the public display of their collaboration, and in texts that they co-authored together. This Chapter makes the case for Grouchy’s co-authorship of Condorcet’s influential 1791 Cinq mémoires de l’instruction publique and argues for her centrality to Condorcet’s revolutionary thinking and career.