Adam Smith's Theory of Moral Sentiments (1759) lays the foundation for a general system of morals, and is a text of central importance in the history of moral and political thought. By means of the idea of sympathy and the mental construct of an impartial spectator, Smith formulated highly original theories of conscience, moral judgment and the virtues. This volume offers a new edition of the text with helpful notes for the student reader, together with a substantial introduction that sets the work in its philosophical and historical context. "The Theory of Moral Sentiments" clearly demonstrates that besides mundane economic pursuits, Smith was just as interested, if not more so, in the capacity of people to bestow and to esteem benevolence, and to strive for virtue even while they are pursuing their own self-interest. The root of our motivation to act benevolently toward others, says Smith, is our natural propensity to sympathize with others. By the same token, our need to have others sympathize with us fuels our desire to be esteemed by others for our benevolence and generally virtuous character. Although "The Theory of Moral Sentiments" is not well known today, it was widely read and highly praised by the leading intellectuals of the day including David Hume and Edmund Burke. The book went through six different editions between 1759 and 1790 and was also translated into French by the widow of Condorcet. To gain a complete picture of Adam Smith and his ideas, every reader of "The Wealth of Nations" should also become familiar with his classic treatment of ethics.