Nasireddin Tusi

The genious encyclopedist scientist Nasireddin Tusi lived and created in the XIII century. He was born in 1201 in the city of Tus. He wrote more than 150 works in the field of logic, mathematics, astronomy, morality, physics, medicine, literature and in other fields of science.

His works " Euclid’s commentary ", "Treatise on healing doubts about parallel lines", "Tazkira", "Treatise on the quadrilateral", "Twenty chapters on the astrolabe", "Zici-Ilkhani", “A collection of arithemetic with the help of dusty board”, "On reflection and  refraction of light" , "Basics of  learning science" and others have played an important role in the  development of sciences of arithmetics, trigonometry, geometry, physics, logic in Europe:

Writing works contributing to the development of all fields of science, especially mathematics, astronomy, logic, bringing many novelties to science in these works, contructing - Maragha Observatory and providing it with equipment  (1259-1271), creating  a big library there, training talented pupils are among Nasireddin Tusi’s  merits. 

Tusi and his creations have always been of great interest. Starting from the XV century, his works began to be spread in Europe. In 1594, the publication of the great thinker's work "Euclid's Commentary" in Arabic in Rome gave a strong impetus to the development of the science of geometry in Europe. The publication of the work in 1657 in London  made it possible for almost all European scholars to use this work.

In addition to being an encyclopedist scientist, Nasireddin Tusi was also a skilled teacher. He had many students in different fields of science. Among them, Qutbeddin Shirazi (mathematics and astronomy) who came to Maragha in 1260 at the invitation of Nasireddin Tusi,  Allama Hilli (philosophy and logic) , Kamaleddin Abdurrazzaq Baghdadi (the Haadof the library of Maragha observatory for a long time )  can be mentioned. One of the features that characterizes Nasireddin Tusi as a teacher is his works written in textbook content. For example, his work "Calculations with the help of a dusty board" is a wonderful textbook for the subject of arithmetic, His work "Tajrid al-mantig" is a concise, very valuable textbook in the field of logic, covering all sections of Aristotle's "Organon". Nasireddin Tusi has many works that are used as textbooks in other fields of science.

In the science of logic, Aristotle is considered the first teacher, Farabi the second teacher,  Tusi the third teacher. Nasiruddin Tusi was a person with very high qualities. If Nasireddin Tusi impressed scientists with his knowledge and erudition, he won the respect and love of ordinary people with his social qualities - fairness, culture, and good manners.

Nasiruddin Tusi died on June 25, 1274 and was buried near the grave of the seventh imam Museyi Kazim.