教皇不可謬説の提唱者は誰？
Papal infallibility is a dogma of the Catholic Church that states that, in virtue of the promise of Jesus to Peter, the Pope is preserved from the possibility of error "when, in the exercise of his office as shepherd and teacher of all Christians, in virtue of his supreme apostolic authority, he defines a doctrine concerning faith or morals to be held by the whole Church." "Infallibility means more than exemption from actual error; it means exemption from the possibility of error;..." 
Catholic Church