Pascendi Dominici Gregis (on the Doctrine of the Modernists) – Pope St. Pius X, 1907

On September 8, 1907, Pope St. Pius X promulgated the encyclical Pascendi Dominici Gregis, against the devastating errors of modernist doctrines. By definition, modernism is an ideology by which religious truths, and especially Catholic teachings, are derived and interpreted in accordance with personal religious experience, under the influence of the spirit of the current age….