The state (the U.S. Constitution) has not the right to leave every man free to profess and embrace whatever religion he may desire.

Because God knows, searches and clearly understands the minds, hearts, thoughts, and nature of all, his supreme kindness and clemency do not permit anyone at all who is not guilty of deliberate sin to suffer eternal punishments.

The Roman Pontiffs have always...held that all those rites should be preserved which deviate neither from accuracy in matters of faith, nor from what is fitting.

I have always condemned Liberal Catholicism and I will condemn it again forty times over if it be necessary.

In fact, there is only one true and holy religion, founded and instituted by Christ Our Lord. Mother and Nurse of the virtues, Destroyer of vice, Liberator of souls, Guide to true happiness, she is called Catholic, Apostolic, and Roman.

It is error to believe that Every man is free to embrace and profess that religion which, guided by the light of reason, he shall consider true.

Atheism in legislation, indifference in matters of religion, and the pernicious maxims which go under the name of Liberal Catholicism are the true causes of the destruction of states; they have been the ruin of France. Believe me, the evil I denounce is more terrible than the Revolution, more terrible even than The Commune. I have always condemned Liberal Catholicism, and I will condemn it again forty times over if it be necessary.