MARQUIS D' (1704-1771), was born at Aix in Provence on the 24th of June 1704. He entered the army at the age of fifteen, and after a dissipated and adventurous youth settled for a time at Amsterdam, where he wrote some historical compilations and began his more famous Lettres juives (The Hague, 6 vols., 1738-1742), Lettres chinoises (The Hague, 6 vols., 1739-1472), and Lettres cabalistiques (2nd ed., 7 vols., 1769); also the Memoires secrets de la republique des lettres (7 vols., 1743-1478), afterwards revised and augmented as Histoire de l'esprit humain (Berlin, 14 vols., 1765-1768). He was invited by Prince Frederick (afterwards Frederick the Great) to Potsdam, and received high honours at court; but Frederick was bitterly offended by his marrying a Berlin actress, Mlle Cochois. Argens returned to France in 1769, and died near Toulon on the 11th of January 1771.