Pope Clement VI, "Not one man of those traveling outside the faith of the Church and outside the obedience to the Pontiff of the Romans can finally be saved. All those who set themselves up against the faith of the Roman Church and who die in final impenitence will be damned and descend into the perpetual torments of Hell."
Pope Innocent III and the Fourth Lateran Council, 1215, "There is but one universal Church of the faithful, outside of which no one at all can be saved."
Pope Boniface VIII in the Bull 'Unam Sanctam," 1302, "We declare, say, define and pronounce that it is absolutely necessary for the salvation of every human creature to be subject to the Roman Pontiff."
Pope Eugene IV in the Bull 'Cantate Domino, " 1441, "The most Holy Roman Catholic Church firmly believes, professes, and preaches that none of those existing outside the Catholic Church, not only pagans, but also Jews, and heretics and schismatics, can have a share in eternal life; but that they will go into the eternal fire which was prepared for the devil and his angels, unless before death they are joined with Her."
Saint Jerome wrote: "The devil is not busy in pursing infidels and such men as live outside the bosom of Holy Church, because he considers them already won."