'How selfish soever man may be supposed, there are evidently some principles in his nature, which interest him in the fortune of others, and render their happiness necessary to him, though he derives nothing from it except the pleasure of seeing it.' So begins The Theory of Moral Sentiments (1759), the first major text by Adam Smith, who, seven years later, was to publish what was to become one of the major economic classics, The Wealth of Nations (1776). However, Smith regarded The Theory of Moral Sentiments as his most important work because in it he identified the profound human instinct to act not necessarily in self-interest but through, as he phrased it, a 'mutual sympathy of sentiments'. The work is divided into seven parts, starting with Part 1: Of the Propriety of Action, in which