Public academic prize contests—the concours académique—played a significant role in the intellectual life of Enlightenment France, with aspirants formulating positions on such matters as slavery, poverty, the education of women, tax reform, and urban renewal and submitting the resulting essays for scrutiny by panels of judges. In The Enlightenment in Practice, Jeremy L. Caradonna draws on archives both in Paris and the provinces to show that thousands of individuals—ranging from elite men and women of letters artisans, and peasants—participated in these intellectual competitions, a far broader range of people than has been previously assumed. Caradonna contends that the Enlightenment in France can no longer be seen as a cultural movement restricted to a small coterie of philosophers or a limited number of printed texts. Moreover, Caradonna demonstrates that the French monarchy took academic competitions quite seriously, sponsoring numerous contests on such practical matters as deforestation, the quality of drinking water, and the nighttime illumination of cities. In some cases, the contests served as an early mechanism for technology transfer: the state used submissions to identify technical experts to whom it could turn for advice. Finally, the author shows how this unique intellectual exercise declined during the upheavals of the French Revolution, when voicing moderate public criticism became a rather dangerous act.