became a privatdocent at Heidelberg in 1850. The Baden government in 1853 laid an embargo on his teaching owing to his liberal ideas, but the effect of this was to rouse considerable sympathy for his views, and in 1856 he obtained a professorship at Jena, where he soon acquired great influence by the dignity of his personal character. In 1872, on Eduard Zeller's move to Berlin, Fischer succeeded him as professor of philosophy and the history of modern German literature at Heidelberg.