In this religiological comparison, I compared two Muslim scholars, Said Nursi (d.1960) and Fethullah Gulen (b.1938) from the perspective of their Sufi thought. Although, Gulen has always been known as a strict follower of Nursi and has acknowledged Nursi as a great scholar and the founder of Nursi movement, he has differed from him especially with regard to Sufi thought. In this thesis, I have focused on the differences between Nursi and Gulen and presented a different angle from the commonly accepted one. Some of the most important differences concern their general approach to Sufism and doctrines of methodology.