Italian Pope best remembered for his feuds with Dante
Therefore, of the one and only Church there is one body and one head, not two heads like a monster; that is, Christ and the Vicar of Christ, Peter and the successor of Peter... Therefore whoever resists this power thus ordained by God, resists the ordinance of God [Rom 13:2], unless he invent like Manicheus two beginnings, which is false and judged by us heretical, since according to the testimony of Moses, it is not in the beginnings but in the beginning that God created heaven and earth [Gen 1:1]. Furthermore, we declare, we proclaim, we define that it is absolutely necessary for salvation that every human creature be subject to the Roman Pontiff.
We are compelled, our faith urging us, to believe and to hold?and we do firmly believe and simply confess?that there is one holy Catholic and Apostolic Church, outside of which there is neither salvation nor remission of sins
We are told by the word of the Gospel that in this His fold there are two swords?a spiritual, namely, and a temporal? Both swords, the spiritual and the material, therefore, are in the power of the Church; the one, indeed, to be wielded for the Church, the other by the Church; the one by the hand of the priest, the other by the hand of kings and knights, but at the will and sufferance of the priest.
We declare, assert, define and pronounce to be subject to the Roman Pontiff is to every creature altogether necessary for salvation? I have the authority of the King of Kings. I am all in all, and above all, so that God Himself and I, the Vicar of Christ, have but one consistory, and I am able to do almost all that God can do. What therefore, can you make of me but God?
Antiquity teaches us that laymen are in a high degree.
Furthermore, we declare, we proclaim, we define that it is absolutely necessary for salvation that every human creature be subject to the Roman Pontiff.
If, then, the Greeks or others say that they were not committed to the care of Peter and his successors, they necessarily confess that they are not of the sheep of Christ; for the Lord says, in John, that there is one fold, one shepherd, and one only.
Indeed we declare, say, pronounce, and define that it is altogether necessary to salvation for every human creature to be subject to the Roman Pontiff.
Therefore, if the earthly power errs, it shall be judged by the spiritual power ... but if the supreme spiritual power errs it can be judged only by God, and not by man ... Therefore we declare, state, define and pronounce that it is altogether necessary to salvation for every human creature to be subject to the Roman pontiff.