Between 1633 and 1642, the French physician and philanthropist Theophraste Renaudot sponsored a series of public conferences in Paris. These conferences offered an open forum for wide-ranging discussions of a variety of topics, including science, medicine, gender, politics, and ethics. No matter the topic, participants consistently used scientific reasoning as a new standard of evidence. The conferences thus recast the rhetorical traditions of the Renaissance and prefigured the social sciences of the Enlightenment. They provide a candid snapshot of intellectual life at the dawn of the...