A vice in the heart is an idol on the altar.

When I could not see the light with my blind eyes, I blamed not my eyes, but the sun.

If you call [the synagogue] a brothel, a den of vice, the devil's refuge, Satan's fortress, a place to deprave the soul, an abyss of every conceivable disaster or whatever else you will, you are still saying less than it deserves.

Others drink for sterility and commit murder on the human not yet sown. Some when they sense that they have conceived by sin, consider the poisons for abortion, and frequently die themselves along with it, and go to Hell guilty of three crimes: murdering themselves, committing adultery against Christ, and murder against their unborn child.

Either we must speak as we dress, or dress as we speak. Why do we profess one thing and display another? The tongue talks of chastity, but the whole body reveals impurity.

The Church was founded upon Peter: although elsewhere the same is attributed to all the Apostles, and they all receive the keys of the kingdom of heaven, the strength of the Church depends upon them all alike, yet one among the twelve is chosen so that when a head has been appointed, there may be no occasion for schism.

The laws of Caesar are one thing, those of Christ, another. Papinianus judges one way, our Paul another.