“The pope is of such lofty and supreme dignity that, properly speaking, he has not been established in any rank of dignity, but rather has been placed upon the very summit of all ranks of dignities.”
“Hence the pope is crowned with a triple crown, as king of heaven and of earth and of the lower regions.”
“Moreover the superiority and the power of the Roman pontiff by no means pertain only to heavenly things, to earthly things, and to things under the earth, but are even over angels, than whom he is greater.”
“So that if it were possible that the angels might err in the faith, or might think contrary to the faith, they could be judged and excommunicated by the pope.”
“The pope is as it were God on earth, sole sovereign of the faithful of Christ, chief king of kings, having plenitude of power, to whom has been entrusted by the omnipotent God direction not only of the earthly but also of the heavenly kingdom.”
“The pope can modify divine law, since his power is not of man but of God, and he acts as vicegerent of God upon earth with most ample power of binding and loosing His sheep.”
Source: “Ecclesiastical Dictionary” (Roman Catholic), article “Pope” by Ferraris, published by the Press of the Propaganda at Rome in 1899.