"A new, authoritative, and much-needed account of the religion of a little known, much-misunderstood Middle Eastern religious group, the Yezidis. The analysis of this fascinating faith and its intricate syncretism (which includes Gnosticism and heretical Islam) presents a very important contribution to the study of comparative religion." - Martin Schwartz, University of California at Berkeley "The first scholarly attempt to offer a complete account of Yezidi beliefs in all kind of spiritual beings. This comparative study of heterodox Islam and its derivatives, as well as many other 'heresies' of the region, reveals a series of parallels that will prove of great benefit to scholars interested in the comparative history of the world religions." - Adriano V. Rossi, Oriental University of Naples