French deistic philosopher and author; b. at Geneva June 28, 1712; d. at Ermenonville (28 m. n.e. of Paris) July 2, 1778. His mother died at his birth, and his father, a dissipated and violent-tempered man, paid little attention to the son's training, and finally deserted him. The latter developed a passion for reading, with a special fondness for Plutarch's Lives. Apprenticed first to a notary and then to a coppersmith, he ran away (1728) to escape the rigid discipline, and, after wandering for several days, he fell in with Roman Catholic priests at Consignon in Savoy, who turned him over to Madame de Warens at Annecy, and she sent him to an educational institution at Turin. Here he duly abjured Protestantism, and next served in various households, in one of which he was charged with theft. After more wanderings he was at Chambery (1730), from which Madame de Warens had removed. In her household he spent eight years diverting himself in the enjoyment of nature, the study of music, the reading of the English, German, and French philosophers and chemistry, pursuing the study of mathematics and Latin, and enjoying the playhouse and opera. He next spent eighteen months at Venice as secretary of the French ambassador, Comte de Montaignu (1744-45). Up to this time, when he was thirty-nine, his life, the details of which he publishes in his Confessions (Geneva, 1782), may be described as subterranean. He now returned to Paris, where his opera Les Muses galantes failed, copied music, and was secretary of Madame Dupin. Here he came into association with Diderot, Grimm, D'Alembert, Holbach, and Madame d'Epinay, and was admitted as a contributor to the Encyclopedie; and his gifts of entertainment, reckless manner, and boundless vanity attracted attention. With the Discours sur les sciences et les arts (Paris, 1750), a prize essay in which he set forth the paradox of the superiority of the savage state, he proclaimed his gospel of "back to natur...
