Abstract

The version of the invisible hand argument in Adam Smith's Theory of Moral Sentiments differs in important respects from the version in The Wealth of Nations. Both are different, in turn, from the version invoked by Milton Friedman in Free to Choose. However, all three have a common structure. Attention to this structure can help sharpen our sense of their essential thrust by highlighting the questions (about the nature of economic motivation, the structure of markets, and conceptions of the public interest) to which answers of certain kinds would have to be available for any of the versions to succeed.