A Study of Narsi-al-Din al-Tusi's view about Human's Perfecting: Substantial Motion or Change in Accidents?

This article discusses Study of al-Tusi points of view about Human’s Perfecting. We study his views about substantial motion or change in accidents with seeking foundations, consequents and comparatives studies. Tusi’s view is analyzed to two points: 1) perfecting before existentiation of intellective soul, 2) perfecting of intellective soul in human’s life. 1) About the first point; Tusi’s view demonstrates intensifying movements for specific form of soul. 2) About perfecting of intellective soul in human’s life, although Tusi negates substantial motion in some places, but systematic analysis of his views is asserted intensity of being of intellective soul as Neo-Platonist, illuminationism and mysticism. Intensity of being is disagreeable with his foundations about psychology and problem of movement. But he is in the primarily way of substantial motion which Mulla-Sadra has perfected and theorized.