"I used every argument I could think of," he said. "I even repeated back to him the arguments he used in the letters and sermons he wrote against the Tartars."

"Arguing with Fra Tomasso is like trying wrestle a djinn," Daoud said. "I admire your courage in even trying."

Ugolini raised a finger. "I thought I was getting somewhere with him. He kept trying to change the subject. He kept asking me, if the earth moves while the sun stands still—he seems to be convinced that is what happens—then what path does the earth follow? I told him that the Greeks"—he stopped and stared at Daoud—"Oh, never mind the Greeks. The point is, he was mocking me."

"Mocking you?"

"Yes, talking about the heavenly bodies. He was referring to that scroll you gave me to present to him, that work of Aristotle. What a waste, giving that to him. What would I not give to have it myself."

"Why did he keep changing the subject? Did he never tell you where he stands on the alliance?"

Ugolini closed his eyes and nodded. "Yes, finally. He said he made a grave mistake opposing the alliance. He said that if Christians do not seize this chance, the Tartars may be converted to the religion of Mohammed, as those in Russia already have been, which would be the worst of all possible disasters." He opened his eyes and looked at Daoud. "We have lost him."

"Is there nothing we can do to change his mind?"

"I truly believe it is hopeless."

Hearing those words, Daoud felt drained. He sagged against the wall of Ugolini's cabinet, wanting to sit on the floor but unable to do so because then he could not see the cardinal.