The Protestants, in like manner, could give reasons for several kinds of persecution. They could bring the Socinians under the category of blasphemers; and blasphemy, like the ridicule of sacred things, destroys reverence and awe, and tends to the destruction of society. The Anabaptists, they might argue, were revolutionary fanatics, whose doctrines were subversive of the civil order; and the dogmatic sects threatened the ruin of ecclesiastical unity within the Protestant community itself. But by placing the necessity of intolerance on the simple ground of religious error, and in directing it against the Church which they themselves had abandoned, they introduced a purely subjective test, and a purely revolutionary system. It is on this account that the _tu quoque_, or retaliatory argument, is inadmissible between Catholics and Protestants. Catholic intolerance is handed down from an age when unity subsisted, and when its preservation, being essential for that of society, became a necessity of State as well as a result of circumstances. Protestant intolerance, on the contrary was the peculiar fruit of a dogmatic system in contradiction with the facts and principles on which the intolerance actually existing among Catholics was founded. Spanish intolerance has been infinitely more sanguinary than Swedish; but in Spain, independently of the interests of religion, there were strong political and social reasons to justify persecution without seeking any theory to prop it up; whilst in Sweden all those practical considerations have either been wanting, or have been opposed to persecution, which has consequently had no justification except the theory of the Reformation. The only instance in which the Protestant theory has been adopted by Catholics is the revocation of the Edict of Nantes. Towards the end of his life, Melanchthon, having ceased to be a strict Lutheran, receded somewhat from his former uncompromising position, and was adverse to a strict scrutiny into minor theological differences. He drew a distinction between errors that required punishment and variations that were not of practical importance.[244] The English Calvinists who took refuge in Germany in the reign of Mary Tudor were ungraciously received by those who were stricter Lutherans than Melanchthon. He was consulted concerning the course to be adopted towards the refugees, and he recommended toleration. But both at Wesel and at Frankfort his advice was, to his great disgust, overruled.[245]