Leo Schaya (1916-1986) was a prolific author and editor of works on comparative religion and Judaism. He was born in Switzerland, but spent much of his life in Nancy, France. Schaya edited two different French language journals on Comparative Religion, Etudes Traditionnelles and Connaissance des Religions. Although widely published in his native German, and French, this is only his second book to be published in English. He died in 1986. Roger Gaetani is an editor and translator. He is co-editor (with Jean-Louis Michon) of the anthology Sufism: Love and Wisdom, and editor of The Spirit of Tolerance: The Inspiring Life of Tierno Bokar and Introduction to Sufism: The Inner Path of Islam. He lives in Bloomington, IN.