If a future Pope teaches anything contrary to the Catholic Faith, do not follow him.

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.

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

Liberal Catholics are the worst enemies of the Church.

The civil liberty of every mode of worship, and full power given to all of openly and publicly manifesting their opinions and their ideas conduce more easily to corrupt the morals and minds of the people... The Roman Pontiff cannot and ought not to reconcile himself or agree with, progress, liberalism and modern civilization.

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

Give me an army saying the Rosary and I will conquer the world.