In the article deals with socio-political views of one of brightest representatives of the French Enlightenment era, the historian of Russia P.-Sh. Leveque. The great interest is the analysis of the views by Leveque on the most urgent problems of state and public arrangement of Russia of the XVIIIth century: the reign of Peter I and Catherine II. In considering the topic judgments of the French historian with the ideals of the one of the leading philosophers of the Enlightenment era, D. Diderot were compared.