Not to oppose erroneous doctrine is to approve of it, and not to defend at all true doctrine is to suppress it..

The Pope should not flatter himself about his power nor should he rashly glory in his honor and high estate, because the less he is judged by man, th….

If it shall be necessary, through sentences of excommunication against their persons and of interdict against their lands, all backsliding being put ….

The universal Church of the faithful is one outside of which none is saved..

So much must I live for others, that almost I am a stranger to myself..

We believe that the Greeks have been punished through [the Crusades] by the just judgement of God: these Greeks who have striven to rend the Seamless….

Crucifiers of Christ ought to be held in continual subjection..

Kill them all, for God knows His own..

Every cleric must obey the Pope, even if he commands what is evil; for no one may judge the Pope..

The Jews' guilt of the crucifixion of Jesus consigned them to perpetual servitude, and, like Cain, they are to be wanderers and fugitives. The Jews w….

By heart we believe and by mouth confess the one Church, not of heretics but the Holy Roman, Catholic, and Apostolic Church outside which we believe ….

The mysteries of the faith are not to [be] explained rashly to anyone. Usually in fact, they cannot be understood by everyone but only by those who a….

God forbid that all children, of whom daily so great a multitude die, would perish, but that also for these, the merciful God, who wishes no one to p….

Anyone who attempts to construe a personal view of God which conflicts with church dogma must be burned without pity..

It is necessary to obey a Pope in all things as long as he does not go against the universal customs of the Church, but should he go against the univ….

This [Magna Carta] has been forced from the King. It constitutes an insult to the Holy See, a serious weakening of the royal power, a disgrace to the….