Preachers of the new faith frequently complained of his insulting and unjust behaviour.

Thus Ambrose Blaurer, the spokesman of the innovation in Würtemberg, laments, in 1523, that Luther’s enemies quite rightly made capital out of the hateful language employed in his controversial writings. “They wish to make this honey [Luther’s teaching] bitter to us because Luther is so sharp, pugnacious and caustic, ... because he scolds and rants.... Verily this has often displeased me in him, and I should not advise anyone to copy him in this respect. Nevertheless I have not rejected his good, Christian teaching.”[394] Matthew Zell, also a Lutheran, wrote in 1523: “Nothing has turned me more against Luther and pleased me less in him, and the same is true of other good men, than the hard, aggressive and bitter vindications and writings which he has composed against even his own friends, not to speak of the Pope, the bishops and others whom he has attacked so violently and so derisively that hardly has anything sharper, more violent and mocking ever been read.”[395]

Carlstadt, Luther’s friend, and later theological opponent, underwent such rough treatment at his hands, that a modern Protestant writer on Carlstadt says of the chief work Luther directed against him: Its characteristic feature is the wealth of personal invective.... Though attempts have been made to explain the terrible bitterness of his polemics by Luther’s disposition and the difficulty of his situation at the time the work was composed, yet the deep impression left by his controversial methods should not be overlooked. From that time forward they were generally imitated by the Lutheran party, even in disputes among themselves, and made to serve in lieu of true discussion; that such a procedure was entirely alien to Christian charity seems not to have been noticed. The author also refers and, with even greater reason, to the attacks against the “Papists,” “to the constantly recurring flood of abusive language, insults, misrepresentations and suspicions which the reformer poured upon his foes.” He made use of “his extraordinary command of language,” to accuse Zwingli, after his death, most maliciously of heresy.[396]

Amongst other opponents of the new faith, Erasmus, in a writing addressed to Luther, says: “Scarcely one of your books have I been able to read to the end, so great and insatiable is the tendency to libel which they display (‘insatiata conviciandi libido’). If there were only two or three libels one might think you had given vent to them without due consideration, but as it is, your book swarms with abuse on every page (‘scatet undique maledictis’). You begin with it, go on with it, and end with it.”[397] Thomas Murner says, in a reply to Luther, as early as 1520, “I see and understand that you are angry. Therefore it will be best for me to keep cool in order that it may not be said that we both are mad. You really go too far.”[398]

It is true that Murner is very severe and satirical towards Luther; in fact, all Luther’s opponents who wrote against him frequently made use of stronger expressions than became the cause they advocated, being incited and encouraged in this by the language he employed. The Dominican, Conrad Köllin, in his answer to Luther’s attacks on the indissolubility of Christian marriage, is a good instance in point.[399] The Dominicans of Cologne were particularly irritated by Luther’s insults, for at the very outset of the struggle he had called them asses, dogs and hogs.[400]

That Luther’s scolding and storming grew worse and worse as the years went on has been pointed out by the Protestant historian Gustav Krüger, who remarks that Melanchthon could never “see eye to eye with him in this”; Luther, however, did not “by any means always reflect upon what he said, and he must not be held responsible for all he flung among the people by word and pen.”[401]

Luther’s friend, Martin Bucer, strove to console himself in a peculiar fashion for the insults and libels which increased as Luther grew older. To the above-mentioned Ambrose Blaurer he wrote concerning Luther’s attacks on the Zwinglians: “These are terrible invectives and even calumnies, but if you take into account Luther’s character, the evil is diminished. He is by nature violent and accustomed to vituperation, and the abuse of such men (‘conviciari assuetorum convicia’) is not to be made so much of as that of persons of a more peaceable temper.” Two years later, however, Bucer confesses to the same friend his real concern regarding Luther’s outbreaks of passion: “It thrills me with a deadly fear (‘tantum non exanimor’) when I think of the fury that boils in the man whenever he is dealing with an opponent. With what utter rage did he not fall on the [Catholic] Duke George.”[402]

In recent times Protestants have spoken with a certain admiration of the “heroic, yea, godlike,” rage which always inspired Luther’s vituperation. One admirer emphasises the fact, that he “was only too often right,” because his Popish opponents were altogether hardened, and “therefore it could do their souls no harm to make use of sharp weapons against them”; “it was necessary to warn people against these obdurate enemies and to unveil their wickedness with that entire openness and plainness of speech which alone could impress his contemporaries. He considered this his sacred duty and performed it with diligence.” “When he laid about him so mightily, so scornfully, so mercilessly, his efforts were all directed against the devil.” “Where it is necessary for the salvation of souls,” this theologian urges in excuse, “true charity must not refrain from dealing severe wounds, and Luther was obliged to describe as filth what actually was such.” “Thus we see why he not unfrequently chooses dirty, common words and comparisons intentionally in order adequately to express his horror. His eloquence becomes at times a stream carrying with it a quantity of mud, dirt and filth of every kind; but had it not been for it this filth would never have been swept away.”[403] All this is expressed, even more briefly and drastically, by the Luther biographer, Adolf Hausrath, where, in reply to Harnack’s criticism of the “barbarity of Luther’s polemics,” he says: “Since Luther’s road led him to his goal it must have been the right road, and fault-finders should hold their tongues.... He knew the best language to make use of in order to shake his Germans out of their stupid respect for the Roman Antichrist.” ... Luther, the “prophet,” treated his foes “exactly as they deserved,” save in the case of Zwingli.[404]

This was too much for Gustav Kawerau, another historian of Luther. He pointed out, as against Hausrath, that, not to mention others, Duke George and also Schwenckfeld had experienced such treatment at Luther’s hands as was certainly not “deserved.” If Hausrath “thanked God” for the barbarity of Luther’s prophetical polemics, he, for his part, felt compelled to “protest against the proclamation of any prophetical morality which would oblige us to set aside our own moral standard.” “This is to do Luther and his cause, a bad service,” says Kawerau.... “We are not going to venerate in Luther what was merely earthly.”[405] Whether the “earthliness” of his libels and filthy polemics clung only to Luther’s feet, or whether it involved his character and whole work, Kawerau does not say.

We may fairly ask whether on the whole the character of the man has been more correctly gauged by those who look upon his favourite kind of controversy as nothing more than the disfiguring dirt under his feet, or by those others who trace it back to the very nature of his titanic struggle with the Church. Bucer, as we just saw, traced Luther’s outbursts to the violence of his temper, and Luther himself frequently declares that he wrote “so severely, intentionally and with well-considered courage.”[406] This he looks upon as demanded by his position and, therefore, it is, as he thinks, “well done.”[407] According to Wilhelm Walther, Luther had chosen the “heroic method of development,” i.e. “of isolating himself as it were from the whole world”; his standpoint was not “within the grasp” of the world of his opponents.[408] Thus, unless he wished to forsake his cause, he had to carry it through single-handed, straining every nerve and having recourse to vituperation the like of which had never hitherto been heard.