Charity brings to life again those who are spiritually dead.

A song is the exultation of the mind dwelling on eternal things, bursting forth in the voice.

Given the sin of impiety through which they [the Romans] sinned against the divine nature [by idolatry], the punishment that led them to sin against their own nature followed.... I say, therefore, that since they changed into lies [by idolatry] the truth about God, He brought them to ignominious passions, that is, to sins against nature; not that God led them to evil, but only that he abandoned them to evil.

The celebration of Holy Mass is as valuable as the death of Jesus on the cross.

If forgers and malefactors are put to death by the secular power, there is much more reason for excommunicating and even putting to death one convicted of heresy.

He that obstinately denieth the truth before men upon earth, wilfully refuseth his soul's health in heaven.

There is but one Church in which men find salvation, just as outside the ark of Noah it was not possible for anyone to be saved.