'''ابو جعفر محمد بن محمد بن حسن توسی''' مشهور به '''خواجه نصیرالدین''' (زادهٔ ۵ اسفند [] در [[توس]] - درگذشتهٔ ۱۱ تیر ۶۵۳ در [[بغداد]])
عارف ،شاعر،<ref name="badkoobeie" /> فیلسوف، [[علم کلام|متکلم]]، فقیه، ستارهشناس، دانشمند، [[اندیشمند]]،<ref>[http://www.iranicaonline.org/pages/chronology-1 CHRONOLOGY OF IRANIAN HISTORY PART 1] ''iranicaonline.org''</ref> ریاضیدان و منجم [[ایرانیها|ایرانی]]<ref>"Tusi, Nasir al-Din al-." Encyclopædia Britannica. 2007. Encyclopædia Britannica Online. 27 December 2007 <http://www.britannica.com/eb/article-9073899>.</ref><ref>Arthur Goldschmidt, Lawrence Davidson. "A Concise History of the Middle East", Westview Press, 2005. Eighth edition, pg 136</ref><ref>Rodney Collomb, "The rise and fall of the Arab Empire and the founding of Western pre-eminence", Published by Spellmount, 2006. pg 127: "..Nasr ed-Din Tusi, the Persian, Khorasani, former chief scholar and scientist of "</ref><ref>Nanne Pieter George Joosse, Bar Hebraeus, "A Syriac encyclopaedia of Aristotelian philosophy: Barhebraeus (13th c.), Butyrum sapientiae, books of ethics, economy, and politics: a critical edition, with introduction, translation, commentary, and glossaries", Published by Brill, 2004. excerpt: " the famous Persian scholar Naslr al-Dln al-Tusi "</ref><ref>Seyyed Hossein Nasr," Title Islamic philosophy from its origin to the present: philosophy in the land of prophecy",Publisher SUNY Press, 2006. pp 167: “In fact it was common among Persian Islamic philosophers to write few quatrains on the side often in the spirit of some of the poems of Khayyam singing about the impermanence of the world and its transience and similar themes. One needs to only recall the names of Ibn Sina, Suhrawardi, Nasir al-Din Tusi and Mulla Sadra, who wrote poems alongs with extensive prose works”</ref><ref name="Khaldun">James Winston Morris, "An Arab Machiavelli? Rhetoric, Philosophy and Politics in
Ibn Khaldun’s Critique of Sufism", Harvard Middle Eastern and Islamic Review 8 (2009), pp 242–291. [http://escholarship.bc.edu/cgi/viewcontent.cgi?article=1032&context=james_morris] excerpt from page 286 (footnote 39): "Ibn Khaldun’s own personal opinion is no doubt summarized
in his pointed remark (Q 3: 274) that Tusi was better than any other later Iranian scholar".