"Frankly, I do," replied the Archbishop of Treves, without raising his voice. "You have hitherto been in some measure the ally of Mayence. I cannot remember the time when I feared you combined, but it suited me to separate you. I have done so. I learn that our brother of Mayence is both enraged and trembling. If you leave Thuron I shall instantly propose alliance with him, who now thoroughly distrusts you, and he will gladly join me, for I have never pretended to be his friend, and he has ever feared me as an enemy. Why did I propose alliance with you?"

"For your own purposes, as I now know too well."

"Surely. But what suggested the thought that such an alliance might be accepted by you? You cannot guess? Well, I will inform you. Because your ally of Mayence sent secret emissaries to me proposing an alliance with him. I saw there were differences between you, and instantly resolved to make an ally of the stronger. Therefore my envoys went to you, while his were dealing with me in Treves. When my men returned with your consent I told the envoys from Mayence, with much regret, you had made the first proposal to me, and that although I had sent to you begging to be released from our compact, you had refused."

"Which was a lie."

"Say rather a whole series of them, my Lord, or call it diplomacy if you wish to speak politely; but meanwhile do not neglect my advice to build your cathedral in the form of a fortress, and make it a strong one."

"How can you expect me to trust you after such a cynical confession?"

"I do not expect you to trust me. I have dealt with strict honesty towards you from the moment we joined together, yet you have displayed distrust since the first day. I do not in the least object to that. But as I cannot have the advantage of confidence I shall turn to the advantage of perfect frankness. I shall keep to the letter the bargain I have made with you. You shall keep to the letter the bargain you have made with me."

"You mean, then, to attempt to stop my withdrawal?"

"No. You may withdraw to-morrow if you wish to do so, and my men will form line and salute you as you pass. Then I shall divide my forces into groups and attack Thuron night and day until there is not a man left to defend it. That will not take many days, and it will give time for my brother of Mayence to meet my victorious army at the junction of the Rhine and the Moselle, when we will journey amicably together to make some inquiries regarding the progress of your cathedral at Cologne."

Konrad von Hochstaden walked the length of the tent several times with knit brows, turning in his mind the problem that confronted him. Arnold sat on the bench beside the long table which divided them, his face impassive and inscrutable. Never during their colloquy had he raised his voice to a higher key than was necessary to make it distinctly heard. The two monks sat apart, downcast and silent, helpless spectators of a quarrel which might have the most momentous consequences.