On 8th September, 1907, Pope St. Pius X issued his Encyclical Letter Pascendi Dominici Gregis on the doctrine of the Modernists:
"When a Catholic layman or a priest forgets the precept of the Christian life which obliges us to renounce ourselves if we would follow Christ and neglects to tear pride from his heart, then it is he who most of all is a fully ripe subject for the errors of Modernism. For this reason, Venerable Brethren, it will be your first duty to resist such victims of pride, to employ them only in the lowest and obscurest offices. The higher they try to rise, the lower let them be placed, so that the lowliness of their position may limit their power of causing damage. Examine most carefully your young clerics by yourselves and by the directors of your seminaries, and when you find the spirit of pride among them reject them without compunction from the priesthood. Would to God that this had always been done with the vigilance and constancy which were required!"