Herbert Marcuse (1898–1979) was a Frankfurt School philosopher and sociologist known as the Father of the New Left. Marcuse’s analysis of man in modern industrial society has in recent years become a source for revolutionary ideas and slogans. Is his analysis sound? Are his conclusions treu? Alasdair Mac-Intyre pursues these questions in a brilliant, forthright, and highly critical study of Marcuse's thought and his relation to other writers, especially Freud, Marx, and Hegel.