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 universal customs of the Church, he need not be followed.

Kill them all, for God knows His own.

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

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

If it shall be necessary, through sentences of excommunication against their persons and of interdict against their lands, all backsliding being put an end to, they compel them to fulfil their vows.

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

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 English nation, a danger to all Christendom, since this civil war obstructs the crusade. Therefore?we condemn the charter and forbid the King to keep it, or the barons and their supporters to make him do so, on pain of excommunication.