noun
- Claude A·dri·en [klawd ey-dree-uh n; French klohd a-dree-ahn] /klɔd ˈeɪ dri ən; French kloʊd a driˈɑ̃/, 1715–71, French philosopher.
noun
- Claude Adrien (klod adriɛ̃). 1715–71, French philosopher. In his chief work De l’Esprit (1758), he asserted that the mainspring of human action is self-interest and that differences in human intellects are due only to differences in education