THE OATH AGAINST MODERNISM
Pope Pius X
Given by His Holiness St. Pius X September 1, 1910.
I sincerely hold that the doctrine of faith was handed down to us from the apostles through the orthodox Fathers in exactly the same meaning and always in the same purport. Therefore, I entirely reject the heretical misrepresentation that dogmas evolve and change from one meaning to another different from the one which the Church held previously.