9 10 IBN RUSHD, MUHAMMAD (AVERROES). Biur ibn Rushd MeSepher Havaya VeHephsed [treatise on Aristotle]. Manuscript in Hebrew, written in a Karaite hand, on paper. Composed by Caleb son of Eliyahu Torto. ff. (22). Marginal staining. Modern boards. Sm. 4to. n.p, 1559. $5000 - $7000 ❧ A philosophical work originally written in Arabic and translated into Hebrew by Kalonymus ben Kalonymus. Ibn Rushd (Latinized as Averroes, 1126-1198) was a medieval Andalusian polymath who wrote on logic, Aristotelian and Islamic philosophy, psychology, political theory, mathematics, as well as the medieval sciences. His works were translated into several languages and greatly influenced European philosophy in the medieval period. Similarly, “Jewish Averroism” served as an important source in defense of Aristotelian philosophy within Hebrew writings especially in the 14th century.