The Observantines were plainly in his opinion demonstrating their unruliness by seeking to stand by the old foundation principles of the Congregation. He is angered by their exemption from the General and their isolation from the other German Augustinians, and still less does he like their severities; they ought to fall into line with the Conventuals and join them. We know nothing further of the matter nor anything of the rights of the case; it may be noted, however, that the after history of the party with which Luther sided and the eventual dissolution of the Congregation, appear rather to justify the Observantines. On the occasion of a convention of the Order at Gotha in 1515—at which the Conventuals must have had a decided majority, seeing that Luther was chosen as Rural Vicar—he delivered, on May 1, the strange address on slander, which has been preserved. He represents this fault as prevalent amongst the opposite party and lashes in unmeasured terms those in the Order “who wish to appear holy,” “who see no fault in themselves,” but who unearth the hidden sins and faults of others, and hinder them in doing good and “in teaching.” Thus the estrangement had proceeded very far. Perhaps, even allowing for Luther’s exaggeration, the other side may have had its weaknesses, and been guilty of precipitancy and sins of the tongue, though it is unlikely that the faults were all on one side. It is noticeable, however, that Luther’s discourse is not directed against calumniators who invent and disseminate untruths against their opponents, but only against those who bring to light the real faults of their brethren. Scattered through the Latin text of the sermon are highly opprobrious epithets in German. The preacher, for their want of charity, calls his opponents “poisonous serpents, traitors, vagabonds, murderers, tyrants, devils, and all that is evil, desperate, incredulous, envious, and haters.” He speaks in detail of their devil’s filth and of the human excrement which they busy themselves in sorting, anxious to discover the faults of their adversaries.[132] The wealth of biblical passages quoted in this strange address cannot make up for the lack of clear ideas and of any discrimination and judgment as to the limits to be observed by a preacher in commenting on the faults of his time. Luther’s fondness for the use of filthy and repulsive figures of speech also makes a very disagreeable impression. It is true that there we must take into account the manners of the time, and his Saxon surroundings, but even Julius Köstlin, Luther’s biographer, was shocked at the indecency of the expressions which Luther uses.[133]