The very next day the Prince of Orange wrote his letter of resignation to the regent, in which he assured her of his perpetual esteem, and once again entreated her to put the best interpretation on his present step. He then set off with his three brothers and his whole family for his own town of Breda, where he remained only as long as was requisite to arrange some private affairs. His eldest son, Prince Philip William, was left behind at the University of Louvain, where he thought him sufficiently secure under the protection of the privileges of Brabant and the immunities of the academy; an imprudence which, if it was really not designed, can hardly be reconciled with the just estimate which, in so many other cases, he had taken of the character of his adversary. In Breda the heads of the Calvinists once more consulted him whether there was still hope for them, or whether all was irretrievably lost. "He had before advised them," replied the prince, "and must now do so again, to accede to the Confession of Augsburg; then they might rely upon aid from Germany. If they would still not consent to this, they must raise six hundred thousand florins, or more, if they could." "The first," they answered, "was at variance with their conviction and their conscience; but means might perhaps be found to raise the money if he would only let them know for what purpose he would use it." "No!" cried he, with the utmost displeasure, "if I must tell you that, it is all over with the use of it." With these words he immediately broke off the conference and dismissed the deputies.