The favour of these Princes caused Luther frequently to overstep the bounds of courtesy in his behaviour towards them. Julius Boehmer, who is sorry for this, in the Introduction to his selection of Luther’s works remarks, that he was guilty of “want of respect, nay, of rudeness, towards the Elector Frederick and his successor Johann.”[678] Of Luther’s relations with Johann Frederick, Hausrath says: “It is by no means certain that the Duke’s [Henry of Brunswick’s] opinion [viz. that Luther used to speak of his own Elector as Hans Wurst (i.e. Jack Pudding)] was without foundation; in any case, it was not far from the mark. With his eternal plans and his narrow-minded obstinacy, Luther’s corpulent master was a thorn in the side of the aged Reformer.... ‘He works like a donkey,’ Luther once said of him, and, unfortunately, this was perfectly true.”[679] In his will, dated 1537, Luther addressed the following words of consolation to the princely patrons and promoters of his work, the Landgrave and the Elector Johann Frederick: It was true they were not quite stainless, but the Papists were even worse; they had indeed trespassed on the rights and possessions of others, but this was of no great consequence; they must continue to work for the Evangel, though in what way he would not presume to dictate to them.[680]--Melanchthon, who was so often distressed at the way the Princes behaved on the pretext of defending the Evangel, complains that “the sophistry and wickedness of our Princes are bringing the Empire to ruin,” in which “bitter cry,” writes a Protestant historian, “he sums up the result of his own unhappy experiences.”[681] From the accounts of the Visitations in the Electorate we learn more details of the condition of morality, law and order in this the focus of the new Evangel. The proximity and influence of Luther and of his best and most faithful preachers did not constitute any bulwark against the growing corruption of morals, which clear-sighted men indeed attributed mainly to the new doctrines on good works, on faith alone and on Evangelical freedom.