Karl Lndwig Michklet, a German philosopher, born in Berlin, Dec. 4, 1801. He was educated at the university of Berlin, receiving the degree of Ph. D, in 1824. The principles contained in bis inaugural dissertation were developed in bis System der philosophischen Moral (Berlin, 1828). In 1825 he was appointed professor of philology and philosophy in the French gymnasium, which post he held till 1850; and in 1829 he became professor of philosophy also in the university of Berlin. He published Die,. Ethik den Aristoteles (Berlin, 1827). an edition of the Nicomachean ethics with a Latin commentary (2 vols., 1829-'35) and a memoir entitled Examen critique du livre d'Anstnfe intitule Metaphysique (Paris, 1836), which was crowned by the academy of moral and political sciences of Paris. From 1832 to 1842 he was engaged as one of the editors of Hegel's works. in illustration of whose system he wrote Geschiehte der letzten System der Philosophic in Deutschland von hunt Ins Hegel (2 vols., Berlin, ls37-'8) • EnticicfcelungsgescMchte der neuesten Deutschen Philosophic mit besonderer Rucksicht auf den gegenwdrtigen Kampf Schellinfs mit der He-gelschen Schule (1843); and a controversial dissertation, Schelling und Hegel (1839). In 1840 appeared his Anthropologic und Psychologic, in which in many respects he diverged from Hegelian principles.

His own tendency is most decisively shown in his Vorlesungen uber die Persdnlichkeit Gottes und die Unsterb-lichkeit der Seele, oder die ewige Persbnlich-keit des Geistes (1841), and Die Epiphanie der ewigen Personlichkeit des Geistes (1844-'52). He has also published Eine italienische Reise in Brief en (Berlin, 1856); Die Geschichte der Menschheit in ihrem Entwickelungsgange seit dem Jahre 1775 bis auf die neuesten Zeiten (2 vols., 1859-'60); and Naturrecht, oder Rechts-philosophie als die praktische Philosopliie (3 vols., 1866). Since 1860 he has edited and largely contributed to Der Gedanke, the organ of the philosophical society of Berlin.