Luther had in the course of these years become quite another man; he had acquired caution and confidence in intercourse with the great, and had gained a dear-bought insight into the political and private character of the governing powers. To the peaceful nature of his own sovereign nothing could be more painful than this bitter theological strife, which, though sometimes advantageous to him politically, always disquieted his spirit. Continual endeavours were made at court to restrain the Wittenbergers, but Luther was always beforehand with them. Whenever the faithful Spalatinus warned him against the publication of some new aggressive writing, he received for answer, that it could not be helped; that the sheets were already printed, already in many hands, and could not be withdrawn.[29] In intercourse also with his opponents Luther acquired the confidence of an experienced combatant. He was very indignant when in the spring of 1518, Jerome Emser had inveigled him at Dresden to a supper, at which he was obliged to contend with angry enemies; and still more when he heard that a begging Dominican had listened at the door, and had the following day reported all over the town that Luther had been put down by the number of his opponents, and that the listener had with difficulty restrained himself from springing into the room and spitting in his face. At the first interview with Cajetan, he placed himself humbly at the feet of the Prince of the Church; but after the second, he permitted himself to say that the Cardinal was as well suited to his business as an ass to play on the harp. He treated the polite Miltitz with corresponding civility; the Romanist had hoped to tame the German Bear, but the courtier himself was soon put in his proper position, and was made use of by Luther; in the disputation at Leipsic with Eckius, the favourable impression produced by Luther's unembarrassed, honest, and self-composed demeanour, was the best counterbalance to the self-sufficient confidence of his dexterous opponent.