born July 14, 1816, Ville-d'Avray, France
died Oct. 13, 1882, Turin, Italy
French diplomat and writer.
While serving in the diplomatic service (1849–77), he wrote the Essay on the Inequality of Human Races (1853–55), which asserted the superiority of the white race over others and labeled the "Aryans," or Germanic peoples, as the summit of civilization. He claimed that white societies flourished as long as they remained free of "black and yellow strains" and that dilution would lead to corruption. His theory of racial determinism in Essay influenced the racist policies of such figures as Robert F. Wagner , Houston Stewart Chamberlain , and Adolf Hitler .