The three major works upon which his reputation largely rests in the English speaking world were first published in French in the 1950s: "Avicenna and the Visionary Recital", "Creative Imagination in the Sufism of Ibn 'Arabi" and "Spiritual Body and Celestial Earth". His later major work on Central Asian and Iranian Sufism appears in English with an Introduction by Zia Inayat Khan as "The Man of Light in Iranian Sufism". His magnum opus is the four volume "En Islam Iranien: Aspects spirituels et philosophiques". It has been translated into Farsi twice by Dr Enshollah Rahmati and Reza Kuhkan from French (the 4th volume being still untranslated ). , He died on 7 October 1978.