This book combines scholarly research into certain aspect of Sufi doctrines and history with a penetrating account of the spiritual and metaphysical message and significance of Sufism as a living spiritual tradition. In an original discussion, unlike anything that has appeared before in studies of Sufism, the author places special accent on the pertinence of Sufi teachings to the most acute contemporary problems. The book addresses itself to both the ever-increasing Western public interested in Sufism and to the Western-educated Muslim interested in his own spiritual heritage. Dr. Nasr draws on his intimate knowledge of the Sufi literature in Arabic and Persian as well as his first-hand knowledge of Sufi tradition itself to produce this further volume in his numerous studies on the different facets of Islam.