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.
– Pope Boniface VIII, in the 1302 bull Unam Sanctam, quoted from Helen Ellerbe, The Dark Side of Christian History
Pope Gregory VII (1020?-1085)
Roman Catholic Pope, one of Roman Catholicism’s best-loved Popes
Cursed be the man who holds back his sword from shedding blood.
– Pope Gregory VII, inspiring the Crusaders, in Malachi Martin, The Decline and Fall of the Roman Church (1981), p. 134, quoted from Helen Ellerbe, The Dark Side of Christian History
Use against heretics the spiritual sword of excommunication, and if this does not prove effective, use the material sword.
– Pope Innocent III, reiterating the death sentence which the Christian Church had meted out to all heretics and unbelievers for many centuries and which would continue to be endorsed by Christian denominations for centuries to come, even in the twentieth century by Pope Leo XIII (attributed: source unknown)
These sound a little crazy but I also know that no one is perfect.