Nasir al-Din al-Tusi was a prolific author and an eminent scholar in the Islamic medieval period who wrote in different fields of philosophy and science. He was a multi-talented personality who made several accomplishments in a wide range of learning areas, including mathematics, philosophy, astronomy, architecture, theology, Islamic medicine, occult sciences, music, logic, physiology, literature and geography. He made major findings in the fields of astronomy and trigonometry, years before anyone even thought of them. He was instrumental in establishing one of the largest astronomical observatories in the Islamic world, situated in Maragha, modern-day Azerbaijan. He is known for introducing astronomical tables for planetary movements, which were used by astrologers in the coming years. He started writing as a student and went on to become a talented and learned intellectual. His journey of discovering and researching on a variety of subjects began when he was captured and hired as a scientific advisor by Mongol leader Hulagu Khan. He is credited for authoring over 150 books in Arabic and Persian in Islamic subjects as well as in secular areas. He translated the works of some of the most distinguished mathematicians and astrologers in Arabic