Re: not living in the papal apartment
"You were speaking of the fact that I have stayed at St. Martha’s: but I couldn’t live alone in the Palace, and it’s not luxurious. The papal apartment isn’t so luxurious! It’s ample, big, but not luxurious, but I can’t live alone and with a small tiny group! I need people, to meet people, to talk with people…
And because of this, the boys of the Jesuit school asked me: “Why do you do it?"
Out of austerity? Poverty? No, no."
Re: often using the title "Bishop of Rome"
"Yes, on this we must not go beyond what is said. The Pope is bishop, Bishop of Rome, because the Bishop of Rome is the Successor of Peter, Vicar of Christ. There are other titles, but the first title is “Bishop of Rome,” and everything stems from there. To speak, to think what this means to be primus inter pares, no, this isn’t a consequence of that. It’s simply the Pope’s first title: Bishop of Rome. But there are also others … I think you said something about ecumenism: I believe this favors ecumenism somewhat."
-- Pope Francis, from "the" in-flight press conference