In the Mohammedan world the Sufi sect and various dervish bodies are the possessors of the mystical tradition. The Sufis have existed in Persia from the earliest times, and as their pantheism is so at variance with the hot and rigid monotheism of the Arab mind, it has been suggested that Sufism must have been inoculated into Islam by Hindu influences. We Christians know little of Sufism, for its secrets are disclosed only to those initiated. To give its existence a certain liveliness in your minds, I will quote a Moslem document, and pass away from the subject. Al‐Ghazzali, a Persian philosopher and theologian, who flourished in the eleventh century, and ranks as one of the greatest doctors of the Moslem church, has left us one of the few autobiographies to be found outside of Christian literature. Strange that a species of book so abundant among ourselves should be so little represented elsewhere—the absence of strictly personal confessions is the chief difficulty to the purely literary student who would like to become acquainted with the inwardness of religions other than the Christian. M. Schmölders has translated a part of Al‐Ghazzali’s autobiography into French:(246)— “The Science of the Sufis,” says the Moslem author, “aims at detaching the heart from all that is not God, and at giving to it for sole occupation the meditation of the divine being. Theory being more easy for me than practice, I read [certain books] until I understood all that can be learned by study and hearsay. Then I recognized that what pertains most exclusively to their method is just what no study can grasp, but only transport, ecstasy, and the transformation of the soul. How great, for example, is the difference between knowing the definitions of health, of satiety, with their causes and conditions, and being really healthy or filled. How different to know in what drunkenness consists,—as being a state occasioned by a vapor that rises from the stomach,—and _being_ drunk effectively. Without doubt, the drunken man knows neither the definition of drunkenness nor what makes it interesting for science. Being drunk, he knows nothing; whilst the physician, although not drunk, knows well in what drunkenness consists, and what are its predisposing conditions. Similarly there is a difference between knowing the nature of abstinence, and _being_ abstinent or having one’s soul detached from the world.—Thus I had learned what words could teach of Sufism, but what was left could be learned neither by study nor through the ears, but solely by giving one’s self up to ecstasy and leading a pious life.