ABSTRACT
Naṣīr al-Dīn, known to his compatriots as Muḥaqqiq-i Ṭūsī, Khwāja-yi Ṭūsī, or Khwājah Naṣīr, (1201–1274) is one of the best-known and most influential figures in Islamic intellectual history. He studied the religious sciences and elements of the “intellectual sciences” with his father, a jurisprudent of the Twelve Imam school of Shi‘ism at Ṭūsī He also very likely studied logic, natural philosophy, and metaphysics with his maternal uncle in the same city. During this period he also received instruction in algebra and geometry. Afterward he set out for Naishapur, then still a major center of learning, to complete his formal advanced education; and it was in this city that he gained a reputation as an outstanding scholar. His most famous teachers were Farīd al-Dīn al-Dāmād, who through four intermediaries was linked to Ibn Sīnā and his school and with whom Ṭūsī studied philosophy; Quṭb al-Dīn al-Miṣrī, who was himself the best known student of Fakhr al-Dīn al-Rāzī (11481209), with whom Ṭūsī studied medicine, concentrating mostly on the text of Ibn Sīnā’s Canon; and Kamāl al-Dīn ibn Yūnus (1156–1242), with whom he studied mostly mathematics.
