Very few women held any power—some queens did, as did the heads of Catholic convents. In the Enlightenment, the writings of philosopher Jean-Jacques Rousseau gave a political program for reform of the Ancien Régime, founded on a reform of domestic mores. Rousseau's conception of the relations between private and public spheres is more unified than that found in modern sociology. Rousseau argued that the domestic role of women is a structural precondition for a "modern" society. Within early modern society, women of urban artisanal classes participated in a range of public activities and also shared work settings with men (even though they were generally disadvantaged in terms of tasks, wages and access to property.)