Why do authorities around the world want to meet with Pope Francis? What can we learn from his leadership? What are the traits that define a world leader through sports, music, society or politics? What style of governance can help a mother or father of a family? What can we learn from the pope's leadership?

Tenor, Andrea Bocelli; former world chess champion, Garry Kasparov; top model, Valeria Mazza; the President of the International Automobile Federation, Jean Todt; producer of "Chariots of Fire" and "The Mission," David Puttnam; Venezuelan activist, Lilian Tintori, and NY Mets Hall of Famer, Mike Piazza, reveal the keys.