Nasir al-Din al-Tusi compiled his most influential works while residing at Alamut
Nasir-al-Din al-Tusi (1201-1274) one of the major intellectual figures of the thirteenth century, was born in Tus in Khurasan (north-eastern Iran and parts of Central Asia and Afghanistan) into a Twelver Shi'i family. Encouraged by his father to learn all disciplines of knowledge, al-Tusi went to Nishapur to study mathematics, astronomy, and philosophy. He was particularly attracted to the work of ...