Lithuanian Jewish critic of Kant. Well versed in rabbinical literature Maimon (who took the name out of respect for Maimonides) lived a prickly and perpipatetic life moving between various occupations and various Jewish communities. His works include Versuch über die Transcendentale Philosophie (1790), which caused Kant to declare, in a letter to Marcus Herz, that Maimon was the most acute of all his critics and opponents. His most important work was the Kritische Untersuchungen über den Menschlichen Geist (1797), an early expression of idealism that subsequently influenced Fichte and Hegel.