Pierre le Pesant, sieur (lord) de Boisguilbert (1646-1714), a French economist and precursor of the Physiocrats who advocated for economic and fiscal reforms in France during the reign of Louis XIV. He argued that the true source of national wealth was not money, but agriculture. A key idea of Physiocracy was that agriculture, and more generally the extractive sectors (e.g., grasslands, pastures, forests, mines, and fisheries), were the basis of economic production. The ideas of the Physiocrats lay the foundation for Adam Smith and the development of classical economics.
 Christensen, P. P., 2003. Epicurean and Stoic Sources for Boisguilbert's Physiological and Hippocratic Vision of Nature and Economics. History of Political Economy, 35:101-128.
 Groenewegen, P., 2000. Boisguilbert’s Theory of Money, Circular Flow, Effective Demand and Distribution of Wealth. History of Economics Review, 31:33-43.