Sheikh Saadi, wearing the white woolen robe of a Sufi, sat on a many-colored carpet of Mosul, an open copy of the Koran resting on an ornately carved lectern before him. His hand, as dark as the mahogany of the stand, caressed the page as he read aloud. "'Such as persevere in seeking their Lord's countenance and are regular in prayer and spend of that which We bestow upon them secretly and openly, and overcome evil with good: Theirs will be the Heavenly Home.'" _Mohammedan dogs!_ Daoud remembered Father Adrian in his black and white robes shouting in the chapel at Chateau Langmuir. _Satan is the author of that vile book they call the Koran._ By the age of eleven Daoud had already known cruelty and evil at the hands of the Turks who had captured him, kindness with Baibars, and goodness with Sheikh Saadi. The Sufi sheikh had never made any claim, but Daoud had no doubt that he often walked and talked with God. "Secretly and openly are we to give," the old man was saying. "God has been generous to us, and we must be generous in turn. When you are kind to a bird or a donkey, or even to an unclean animal like a pig or a dog, He loves you for it. He loves you more when you are kind to a slave or to a woman or to one of the unfortunate, like a cripple or an unbeliever." "Daoud is both a slave and unbeliever," said Gamal ibn Nasir with a faint sneer. "Must I be kind to him?" Daoud stared at Gamal, burning with hatred, all the more because what he said was true. Gamal was a slender, olive-skinned boy whom no one dared cross, because he was a grandson of the reigning Sultan of Egypt, Al Salih Ayub. Most of Saadi's students were boys of noble family, and Daoud knew that he was permitted to enter this circle only because all men feared and respected Baibars. And even though he studied Islam with them because it was Baibars's wish, Daoud remained fil-kharij, an outsider, because he was an unbeliever. The boys sat in a semicircle, their rectangles of carpet spread over the blue and white tiles of the inner courtyard of the Gray Mosque, where Saadi had been teaching since long before these students were born. The old black man sat with his back to the gray stones of the western wall, the stones that gave the mosque its name. He taught in the late afternoon, when he and the boys could sit in the shade. "God is compassion itself, Gamal," Sheikh Saadi said with a smile, "but even He may find it hard to love a mean spirit." The sultan's grandson blushed angrily, and his eyes fell. Thinking about the compassion of God, Daoud opened his eyes wide as a startling idea occurred to him. But after the insult from Gamal his tongue felt thick in his throat and the palms of his hands went cold at the thought of speaking. He still stumbled over the Arabic tongue in which Sheikh Saadi conducted his lessons. Saadi looked warmly upon him. "Daoud has a question?"