born July 28, 1804, Landshut, Bavaria
died Sept. 13, 1872, Rechenberg, Ger.
German philosopher.
The son of an eminent jurist, he studied under G.W.F. Hegel in Berlin but later abandoned Hegelian idealism for a naturalistic materialism. In Thoughts on Death and Immortality (1830), he attacked the concept of personal immortality. His Abelard and Heloise (1834) and Pierre Bayle (1838) were followed by On Philosophy and Christianity (1839), in which he claimed that "Christianity has in fact long vanished not only from the reason but from the life of mankind." In The Essence of Christianity (1841), he proposed that God is merely the outward projection of mankind's inward nature. Some of his views were later endorsed by Karl Marx and Friedrich Engels .