Years ago I heard Dr. Samuel Zwemer, the greatest missionary to the Mohammedans for the last twenty-five years following your own Gairdner, say that the word for real holiness in Arabic never appears in the Koran. When I came to London I met one of the famous Arabic scholars in Great Britain, a true Christian believer, and I asked him if I had heard correctly. He replied, "I never thought of that before, but I will look it up." "Within forty-eight...