explores the life and work of the medieval Persian polymath Nasir al-Din Tusi (d. 1274) within the historical and religious contexts in which he was active during the course of his eventful life. The book brings to light the philosophical character of all the different intellectual areas and genres of writing that Tusi experimented with, including: metaphysics, theology, ethics, politics, astronomy, logic, and aesthetics. The author describes one of the most tumultuous periods in medieval Muslim history between Mongols invasions and Isma’ili ascendancy. She illustrates the cross-fertilization of ideas which found their broadest expression in the thought and writings of Nasir al-Din Tusi.