changed your mind about him. this is "piers morgan live." the first full day for pope francis begins with private prayer. he was at the main basilica for about 30 minutes before turning to the sistine chapel for his first mass, in italian. he asked the cardinals to have courage and said the church must move forward, a job that begins in earnest now that he's in charge. my first guests have a lot to say about the new pope and that's just for starters. mia farrow and martin sheen, hollywood icons, devout catholics and political activists. they join me now along with an impressive young man, craig kielburger who began the organization free the children. welcome to you all. i'm very excited about this. mia farrow, martin sheen making their debuts on "piers morgan live," two of my favorite actors in history. how about that. >> thank you. thank you.