Kant (Immanuel), German critical philosopher, b. Königsberg, 22 April, 1724. He became professor of mathematics in 1770. In 1781 he published his great work, The Critick of Pure Reason, which denied all knowledge of the "Thing itself," and overthrew the dogmatism of earlier metaphysics. In 1792 the philosopher fell under the royal censorship for his Religion within the Limits of Pure Reason. Kant effected a complete revolution in philosophy, and his immediate influence is not yet exhausted. Died at Königsberg, 12 Feb. 1804. Kapila. One of the earliest Hindu thinkers. His system is known as the Atheistic philosophy. It is expounded in the Sankhya Karika, an important relic of bold rationalistic Indian thought. His aphorisms have been translated by J. R. Ballantyne. Karneades. See Carneades. Keeler (Bronson C.) American author of an able Short History of the Bible, being a popular account of the formation and development of the canon, published at Chicago 1881. Keim (Karl Theodor), German rationalist, b. Stuttgart, 17 Dec. 1825. Was educated at Tübingen, and became professor of theology at Zürich. Is chiefly known by his History of Jesus of Nazara ('67-'72). He also wrote a striking work on Primitive Christianity ('78), and endeavored to reproduce the lost work of Celsus. His rationalism hindered his promotion, and he was an invalid most of his days. Died at Giessen, where he was professor, 17 Nov. 1878. Keith (George), Lord Marshall, Scotch soldier, b. Kincardine 1685, was appointed by Queen Anne captain of Guard. His property being confiscated for aiding the Pretender, he went to the Continent, and like his brother, was in high favor with Frederick the Great. Died Berlin, 25 May, 1778. Keith (James Francis Edward), eminent military commander, b. Inverugie, Scotland, 11 June, 1696. Joined the army of the Pretender and was wounded at Sheriffmuir, 1715. He afterwards served with distinction in Spain and in Russia, where he rose to high favor under the Empress Elizabeth. In 1747 he took service with Frederick the Great as field-marshal, and became Governor of Berlin. Carlyle calls him "a very clear-eyed, sound observer of men and things. Frederick, the more he knows him, likes him the better." From their correspondence it is evident Keith shared the sceptical opinions of Frederick. After brilliant exploits in the seven years' war at Prague, Rossbach, and Olmutz, Marshal Keith fell in the battle of Hochkirch, 14 Oct. 1758.