Khatami's main research field is political philosophy. One of Khatami's academic mentors was Javad Tabatabaei, an Iranian political philosopher. Later on Khatami became a University lecturer at Tarbiat Modarres University, where he taught political philosophy. Khatami also published a book on political philosophy in 1999. The ground he covers is the same as that covered by Javad Tabatabaei: The Platonizing adaptation of Greek political philosophy by Farabi (died 950), its synthesis of the "eternal wisdom" of Persian statecraft by Abu'l-Hasan Amiri (died 991) and Mushkuya Razi (died 1030), the juristic theories of al-Mawardi and Ghazali, and Nizam al-Mulk's treatise on statecraft. He ends with a discussion of the revival of political philosophy in Safavid Isfahan in the second half of the 17th century.