Celebrated French essayist, born at Aix, Provence, poor, but of an old and honourable family; entered the army at 18, served in the Austrian Succession War, resigned his commission in 1744, settled in Paris and took to literature; his principal work was "Introduction à la Connaissance de l'Esprit Humain," followed by reflections and maxims on points of ethics and criticism; he suffered from bad health, and his life was a short one (1715-1747).