Christian Von Wolf, baron, a German philosopher, born in Breslau, Jan. 24, 1679, died in Halle, April 9, 1754. He graduated at Leipsic in 1703, and subsequently lectured there. In 1706 the invasion of Charles XII. drove him from that city, and in 1707 he became professor of mathematics and natural history at Halle. In 1723, having been accused by his theological colleagues of heterodoxy, he was deprived of his place by Frederick William I. and summarily expelled from the country. This gave rise to great agitation, and his services were sought in many seats of learning, after he had accepted a professorship at Mar•burg. In 1740, after the accession of Frederick the Great, he was reinstated at Halle, and was made vice chancellor of the university, privy councillor, and professor of natural and international law. In 1743 he was made chancellor of the university, and in 1745 baron. Wolf systematized and extended, but partly also modified, the theories of Leibnitz, and the Leibnitzo-Wolfian philosophy ruled Germany during the 18th century until the time of Kant. The works of Wolf in German (Vernünftige Gedanken, 7 vols., 1712-'33) and Latin (22 vols., 1728-'50) treat of all the branches of philosophy excepting aesthetics, which was first developed by his pupil Baumgarten. His systematic philosophical treatises are: PhilosopMa Pationalis (1728); Psychologia Empirica (1728); PhilosopMa Prima, sue Ontologia (1730); Cosmclogia Generalis (1731); PhilosopMa Moralis (1732); Psychologia Rationalis (1734); Theologia Naturalis (1736-'7); and PMlosophia Practica Umversalis (1738-'9). His chief mathematical writings are included in Elementa Matheseos Universce (5 vols. 4to, 1732-'41). His other publications include Jus Naturm (8 vols., 1740-'48) and Jus Gentium (1749). - See Ludovici, Ausfuhrlicher Entwurf'einer vollstdndigen Historie der Wolfschen PhilosopMe (3 vols., Leipsic, 1737), and Wolf's autobiography, edited by Wuttke (1841).