(born June 4, 1694, near Paris, France - died Dec. 16, 1774, Versailles) French physician and economist. He served as consulting physician to louis-xv-of-franceat Versailles, where he developed an interest in economics. In his Tableau économique (1758), he described the relationship between the different economic classes of society and the flow of payments among them, and he developed the concept of economic equilibrium used by many later economic analysts. An advocate of laissez-faireeconomic policy, he became the intellectual leader of the physiocrat-bus-econ-in-encyclopedia, the first systematic school of political-economy.