This had to be answered quickly, before he was launched on the grievances of the Arabs. "You are right, you show the wisdom you are everywhere known for, the secret lies in limits. The extortion of money from the Jews, the threat of insult to their dead, these go beyond the limits, I think we are agreed on that. Let Arab quarrel with Arab and Jew with Jew. That is natural and belongs to the order of things. You are here in La Kalsa, the Greeks are in their district of the Martorana, the Lombards in the Albergheria, and so on. We do not pray together, but we can live together."

"Thurstan the Viking, tell me, is it worse for one Arab to kill another than for an Arab to kill a Jew?"

"It is worse in its results, it is worse in the degree of harm to our realm. I do not make a judgement about the wickedness of it."

"A wise reply. We cannot make such a judgement, do you not agree? No two killings could ever be exactly alike in all particulars, even to the temper of the blade or the knotting of the silk. And how can degrees of provocation be compared? As it has been truly said, though clouds in the sky are constantly changing, two might be the same for the briefest of moments. However, this moment can only be witnessed by God, the All-Seeing."

"True," I said, "true." I did not know whether this was a verse from the Koran, the words of an Arab sage, or merely an invention of Muhammed's own. But I did know that he was seeking to draw me away into one of the discussions he so much enjoyed, interminable, abounding in metaphor, always inconclusive. "Our great King has given us an example to follow,"

I said. "In his Assizes at Ariano he made a code of laws and in this he laid it down that all the subject people within his realm should live under the laws and customs of their fathers."

I heard Muhammed sigh, which was what he intended. "In which court, and by whose custom and tradition would it be tried if those disputing were a Roman Christian, a Norman let us say, and a Moslem? Thurstan, I have a place for you in my heart, but we must speak of things as they are, not as we would wish them to be. This is a lesson you have yet to learn. The balance is changing – this balance you speak of with such eloquence.

Every day brings new numbers of Franks and Lombards, people differing in degree but all of the Latin Rite. The King gives grants of Arab land to Lombard farmers, who turn our people into serfs, he founds monasteries for the Latin clergy, he gives fiefs to the Norman knights, as he did to your father."

"How do you know this?" I had never spoken of my father to him, and it was almost fourteen years now since our estates had been made over to the Church.

"As it has been truly said, a man with many friends is like a fortunate fisherman. He casts his net wide and the catch is always good."

"Yes, I see." I did not want to talk of this with Muhammed; the loss of the land had seen the end of my hopes of knighthood, and it was still bitter to me. "It is true that many have come from the north to make their homes with us," I said. "When the balance is threatened, there is the more need for care."

Muhammed sighed again. "We do not like the Jews," he said. "They do not respect this balance, they lend money at exorbitant rates to our people and send violent men to frighten them if payment is delayed."

"But you also have your moneylenders, is it not so? Their rates must be even higher, if your people go to the Jews."

"Palermo is getting richer," Muhammed said, looking at me very steadily.

"And the sign of this is that everyone wants to borrow money. We do not like the Greeks any better. Greek cripples put on turbans and beg in our streets, using our own language, because they know that our religion enjoins charity on us. Where is the balance in that? It is deceitful and shows a low level of morality. Some of them are not even true cripples.

The Sicilians of Palermo we do not like. They want to take everything into their own hands, they are not interested in sharing. They kill our people and try to take over our trade with our fellow-Moslems. Tell me, Thurstan the Viking, where is the balance in that?"

He was talking now about the trade in drugs, the hashish that came from North Africa and the opium from Anatolia. This last was costly: the caravans from the poppy fields of Mersin passed through Byzantine lands on their journey westward and so were subject to high dues, which greatly increased the price on the streets of Palermo and Messina.

"You cannot answer," he said. "Answer there is none. There are also the Normans."

He paused for a long moment on this. Then he said, "We like the Normans, our King is a Norman, we live under his rule. We call him the Powerful Through God. You yourself have Norman blood. But this is Sicily, the Normans of Sicily have lived in the sun. Thurstan, I will say this to you because we are friends, we speak our minds to each other. They have lived in the sun, their brains are not damaged by ice. This freezing of the brains in cold climates was remarked first by Said al-Andalusi. In his writings on the subject of Europe he says that the cold winters stunt the brains of the Franks, and his words have been proved true before the walls of Damascus."

I knew what was coming now, knew it from the extreme gravity that had appeared like a mask on Muhammed's face. It was impossible during these months to talk to any Moslem about events in the world without becoming aware of the secret joy they felt at the disastrous failure of the Second Crusade, which had ended some months before in the ignominious defeat of the Christian army. It might be cloaked by an air of grave moral reflection, it might be concealed beneath an appearance of regret, but it was always there.

"They sat in counsel together and decided to attack Damascus," Muhammed said, shaking his head and pursing his lips. "O, what a catastrophe! O, what a terrible mistake! The Burids of Damascus were their natural allies against the power of Nur ed -Din. And where did they set up their camp? In the orchards below the walls? No, on the plain before the city, where there was no water, no shade. In this situation the only thing was to attack at once, but no, they sat there for four days, quarrelling among themselves, dying like flies. On the fifth day they abandoned the siege. They set off back to Palestine without even making the assault!

The greatest army the Franks have ever put in the field. O, what a calamity! O, what a humiliation! And just think – before that they were considered invincible."

As on similar occasions before I found that the best response to this was silence. And in fact Muhammed, who understood the need for dignity, clearly did not expect a reply. After a moment, in changed tones, he said, "It is not my people who have desecrated the graves of the Jews and used threats to extort money from them. But you have come to me and we are friends. We will find out who these people are and we will speak sharply to them."

"These words of yours afford me great pleasure," I said. "Yusuf ibn Mansur will also be delighted."

"God's blessings on his head. They will not be able to walk without sticks for a week or two. So we keep our paradise, eh?"

He looked at me with a humorous narrowing of his eyes. I sensed that our conversation was coming to a close and began to rise. I heard Hafiz shift his feet and after a moment saw him come into view. Muhammed rose also; his, as the person of greater consequence, would be the final words on parting.

"No, rest assured, Thurstan the Viking. We cannot repay the money, it will all be spent by now on harlots and evil courses. But we will talk to them. To offend against the natural human respect for the dead! What animals! The fault lies in their upbringing, they are not taught respect. Young men of good instruction, if such an intention had formed in their minds, what would they do? Would they not come to discuss the matter, ask our permission?"