That is the title of my most recent work-in-progress with my colleague and friend Alain Alcouffe. In summary, building on our own original research as well as the previous work of Brian Bonnyman, John Rae, and Ian Simpson Ross, we survey Adam Smith’s encounters with some of the leading figures of the Age of Enlightenment during his sojourn in Switzerland in late 1765/early 1766, including his intellectual hero Voltaire; the naturalist Charles Bonnet (1720-1793), who Smith once described as “one of the worthiest, and best hearted men in Geneva … notwithstanding he is one of the most religious” (letter to David Hume dated 9 May 1775); the biologist-priest John Turberville Needham (1713-1781), who was embroiled in a bitter dispute with Voltaire at the time; the physician Théodore Tronchin (1709-1781), whose son was Smith’s student at Glasgow; the salonnière Marie Louise Nicole de La Rochefoucauld, the Duchesse d’Enville (1716-1797), a possible love interest (pictured below) who may have introduced Smith to Turgot, and her son Louis Alexandre de La Rochefoucauld, 6th Duke of La Rochefoucauld (1743-1792); and last but not least, Lord and Lady Stanhope, who invited Smith to dinner at their home in Geneva on Christmas Day 1765. (Here is a link to our slide deck.)