To be honest, I don't really care about any pope. It's not something I think about much, to be quite honest with you.
Sometimes a scene works and acting is the easiest thing in the world and you don't have to do much of anything - just enjoy yourself and listen to the other actor. When it doesn't work, then every actor has different ways of dealing with the impasse. Sometimes you use memories from the past. Whatever. It depends from job to job.
With any character I have played, there's infinite possibilities for how they might behave, depending on who they are talking to or how they react to things.
You see people on the street yelling and think they're crazy, but maybe they're just happy and expressing what they feel at all times.