IT has been strange indeed to revise this book in barracks, amid efforts to learn to fire big guns — possibly against the Turks. And yet this necessity which lies upon us Englishmen today only emphasizes afresh the importance of our trying to understand the real problem of Islam. When the war is over, Islam will remain. Whatever state of disorganization it may be in and whatever its centre, it will still tow er up before us gaunt and shadowed as one of the most difficult problems of civilization and as the great reproach of the Christian Church. We can do nothing to help Moslems, or to solve their problem, unless we know something of their story and have tried to understand the power and fascination of their rugged simple creed.