== Bibliography ==* "Ethico-Religious Concepts in the Quran" (1966 republished 2002) ISBN 0-7735-2427-4* "The Concept and Reality of Existence" (1971) ISBN 9839154818* "Concept of Belief in Islamic Theology" (1980) ISBN 0-8369-9261-X* "God and Man in the Koran" (1980) ISBN 0-8369-9262-8* "Sufism and Taoism: A Comparative Study of Key Philosophical Concepts" (1984) ISBN 0-520-05264-1* "Creation and the Timeless Order of Things: Essays in Islamic Mystical Philosophy" (1994) ISBN 1-883991-04-8* "Toward a Philosophy of Zen Buddhism" (2001) ISBN 1-57062-698-7* "Language and Magic - Studies in the Magical Function of Speech" (1956) Keit Institute of Philological Studies* "The Metaphysics of Sabzvârî", tr.
* "Ethico-Religious Concepts in the Quran" (1966 republished 2002) ISBN 0-7735-2427-4* "The Concept and Reality of Existence" (1971) ISBN 9839154818* "Concept of Belief in Islamic Theology" (1980) ISBN 0-8369-9261-X* "God and Man in the Koran" (1980) ISBN 0-8369-9262-8* "Sufism and Taoism: A Comparative Study of Key Philosophical Concepts" (1984) ISBN 0-520-05264-1* "Creation and the Timeless Order of Things: Essays in Islamic Mystical Philosophy" (1994) ISBN 1-883991-04-8* "Toward a Philosophy of Zen Buddhism" (2001) ISBN 1-57062-698-7* "Language and Magic - Studies in the Magical Function of Speech" (1956) Keit Institute of Philological Studies* "The Metaphysics of Sabzvârî", tr.