But all his caution and reservation did not hinder his opponents from continually working against him, accusing him of synergism and Zwinglianism. At the Colloquy of Worms in 1557 which he attended only reluctantly, the adherents of Flacius and the Saxon theologians tried to avenge themselves by thoroughly humiliating Melanchthon, in agreement with the malicious desire of the Roman Catholics to condemn all heretics, especially those who had departed from the Augsburg Confession, before the beginning of the conference. As this was directed against Melanchthon himself, he protested, so that his opponents left, greatly to the satisfaction of the Roman Catholics who now broke off the colloquy, throwing all blame upon the Protestants. The Reformation in the sixteenth century did not experience a greater insult, as Friedrich Nietzsche says. Nevertheless, Melanchthon persevered in his efforts for the peace of the church, suggesting a synod of the Evangelical party and drawing up for the same purpose the Frankfurt Recess, which he defended later against the attacks of his enemies.