Luther meanwhile, on June 29, the day of St. Peter and St. Paul, had preached a sermon at the request of Duke Barnim at the Castle of Pleissenburg, wherein, referring to the Gospel of the day, he treated, in a simple, practical, and edifying manner, of the main point of the disputation between Eck and Carlstadt, and at the same time of the point he himself was about to argue, namely, the meaning of the power of the keys granted to St. Peter. In opposition to him, Eck delivered four sermons in various churches of the town (none of which Luther would have been allowed to preach in), and speaking of them afterwards he said, 'I simply stirred up the people to be disgusted with the Lutheran errors.' The members of the Leipzig university kept peevishly aloof from their brethren of Wittenberg throughout the disputation, while paying all possible homage to Eck. When Luther one day entered a church, the monks who were conducting service hastily took away the monstrance and the elements, to avoid having them defiled by his presence. And yet he was afterwards reproached for neglecting to go to church at Leipzig. In the hostelries where the Wittenberg students lodged, such violent scenes occurred between them and their Leipzig brethren, that halberdiers had to be stationed at the tables to keep order. Duke George invited the heretic, together with Eck and Carlstadt, to his own table, and to a private audience as well. So frank and genial was he, and so intent on making himself acquainted with Luther and his cause. Luther spoke of him then as a good, pious prince, who knew how to speak in princely fashion. The Duke, however, told him at that audience, that the Bohemians entertained great expectations of him; and yet George, who on his mother's side was grand-son to Podiebrad, King of Bohemia, was anxious to have all taint of the hateful Bohemian heresy most carefully avoided. On this point Luther remarked to him that he knew well how to distinguish between the pipe and the piper, and was only sorry to see how accessible princes might be to the influence of foreign agitations. Leipzig altogether must have been a strange and uncomfortable atmosphere for Luther. On Monday, July 4, he entered the lists with Eck. On the morning of that day he signed the conditions, which had been arranged in spite of his protest; but he stated that, against the verdict of the judges, whatever it might be, he maintained the right of appeal to a Council, and would not accept the Papal curia as his judge. The protocol on this point ran as follows: 'Nevertheless Dr. Martin has stipulated for his appeal, which he has already announced, and so far as the same is lawful, will in no wise abandon his claim thereto. He has stipulated further that, for reasons touching himself, the report of this disputation shall not be submitted for approval to the Papal court.' [Illustration: Fig. 15.--LUTHER. (From an engraving of Cranach, in 1520.)]