Bruno Bauer (German: [ˈbaʊɐ]; 6 September 1809 – 13 April 1882) was a German philosopher and historian. As a student of G. W. F. Hegel, Bauer was a radical Rationalist in philosophy, politics and Biblical criticism. Bauer investigated the sources of the New Testament and, beginning with Hegel's Hellenophile orientation, concluded that early Christianity owed more to ancient Greek philosophy (Stoicism) than to Judaism.