W. E. B. Du Bois never felt so at home as when he was a student at the University of Berlin. But Du Bois was also American to his core, scarred but not crippled by the racial humiliations of his homeland. In Lines of Descent, Kwame Anthony Appiah traces the twin lineages of Du Bois' American experience and German apprenticeship, showing how they shaped the great African-American scholar's ideas of race and social identity.