German philosopher, son of the succeeding, born at Landshut; studied theology at Hiedelberg, but coming under the influence of Hegel went to Berlin and devoted himself to philosophy; after failing in an attempt to support himself by lecturing in Erlangen, he was fortunate in his marriage, and upon his wife's means lived a retired and studious life at Bruckberg; in his philosophy, which is a degeneracy and finally total departure from Hegel, he declines to find a higher sanction for morality than man's own conception of right and wrong as based on a doctrine of Hedonism (q. v .); his chief work, on the nature of Christianity, which was translated into English by George Eliot, is extravagant in its departure from orthodox lines of thought; his influence has been trifling outside his own country; he began with Hegel, but "descended at last from Hegel's logical idea to naked sense," and what guidance for life might be involved in it (1804-1872).