Adam Smith revolutionized economic theory with his 1776 work An Inquiry to the Nature and Causes of the Wealth of Nations. He proposed rules governing labor, supply, and demand; and describes division of labor, stockpiling of wealth, lending, and interest. Smith also discusses how economies lead to opulence. Wealth of Nations also offers a defense for free-market capitalism. Any student of economics should be familiar with the concepts and laws that Smith developed, as much of economic theory is still based upon his work. Volume I of this two-volume set contains Book I, Book II, and Book III of the original manuscript. Scottish economist and philosopher ADAM SMITH (1723-1790) helped set standards in the fields of political economics and moral philosophy, playing a key role in the early development of the scholarship of economics. His other writings include Essays on Philosophical Subjects.