Khalidi graduated with a B.A. from the University of London in 1945, then studied at the University of Oxford, gaining an M.Litt. in 1951. He then taught at the Faculty of Oriental Studies in Oxford, until he resigned, after the trilateral British, French and Israeli assault on Egypt in 1956, to take up teaching at the American University of Beirut. In the 50s he wrote 2 essays on Abd al-Ghani al-Nabulsi, a Syrian Sufi scholar who had written on tolerance, and who practiced this in regard to Jews and Christians he encountered.[4]