opinion had greatly limited the papal power—had suddenly disappeared. It was specially displeasing to him that a Council should negotiate with heretics. A victory in the coming campaign would, therefore, appear to him as a victory not only over the Hussites, but also over the Council. Had the Hussites been subdued by the strength of the sword it would become unnecessary to negotiate with them, and it was only to obtain peace that the German princes demanded the convocation of a Council. If this necessity disappeared it would be easy to dissolve the Council.
Before referring to this, the last, crusade against the Bohemians, it is necessary to consider the internal condition of Bohemia at this moment, and also to refer to the renewed negotiations between Bohemia and Poland. The intense dislike and distrust of ecumenical councils which Pope Martin entertained inspired him—as he now no longer expected much help from Sigismund and Germany—with the idea of seeking aid against Hussitism from the Polish nation. He had, therefore, before consenting to the convocation of the Council of Basel, entered into negotiations with Ladislas, King of Poland, and his cousin Vitold, Grand Duke of Lithuania. In a letter addressed to them on October 1, 1430, he begged the princes to undertake the task of either converting the heretics or destroying them. He gave them permission to negotiate with those who had deserted the Church and to grant them pardon, and he was even ready to consent to any concessions the princes might make, unless they were contrary to the faith and the regulations of the Church; should the Hussites, however, refuse to be converted, the princes were to destroy them in any manner possible, and they were not to consider themselves as bound by any previous promise, even if it had been confirmed by oath; for it was within the power of the Church to annul all promises; and every one could neglect his natural duties, to his father, son, brother, or other relation, and even commit parricide if this was to the advantage of the Catholic
