an Arabian philosopher who flourished in the 12th century, wrote a work in which the existence of God is proved in so able a manner that the arguments remain unrefuted to this day. It was translated into Persian, Hebrew, and Latin. The last-named, by Ed. Pococke, was entitled Philosophus autodidactus, sive epistola Abi Jaafor Ebn-Tophail de Hai Ebbn-Yokdham (Oxf. 1671 and 1700, 4to; and also in English by S. Ockley, Lend. 1708, 1731, 8vo, and other modern languages). — Hoefer, Nouv. Biog. Gé neralé 25, 752.