It may, perhaps, seem to some, Venerable Brethren, that We have dealt at too great length on this exposition of the doctrines of the Modernists. But it was necessary that We should do so, both in order to meet their customary charge that We do not understand their ideas, and to show that their system does not consist in scattered and unconnected theories, but, as it were, in a closely connected whole, so that it is not possible to admit one without admitting all. For this reason, too, We have had to give to this exposition a somewhat didactic form, and not to shrink from employing certain unwonted terms which the Modernists have brought into use. And now with Our eyes fixed upon the whole system, no one will be surprised that We should define it to be the synthesis of all heresies. Undoubtedly, were anyone to attempt the task of collecting together all the errors that have been broached against the faith and to concentrate into one the sap and substance of them all, he could not succeed in doing so better than the Modernists have done. Nay, they have gone farther than this, for, as We have already intimated, their system means the destruction not of the Catholic religion alone, but of all religion. Hence the rationalists are not wanting in their applause, and the most frank and sincere among them congratulate themselves on having found in the Modernists the most valuable of all allies.
--Pope St. Pius X, Pascendi Dominici Gregis
