Arthur Liebert, the German neo-Kantian philosopher, was born Arthur Levi in Berlin. The son of a merchant, he spent six years in business after completing his secondary education in 1895. He then entered the University of Berlin, where he received his doctorate in 1908. After teaching at the Berlin Handelshochschule, Liebert lectured at the University of Berlin, becoming extraordinary professor in 1925. From 1918 to 1933 he was coeditor with Paul Menzer of Kantstudien, which became under their guidance an instrument of growing international cooperation in philosophy. Forced to leave Germany in 1933, when the National Socialists came to power, he was appointed professor of philosophy at the University of Belgrade and there founded the journal Philosophia: Philosophorum Nostri Temporis Vox Universa, which appeared at irregular intervals from 1936 to 1939. When the German armies invaded the Balkans, he found refuge in England, where he published Das Wesen der Freiheit (1944) and, together...