A nun prays in Saint Peter's Square, a day after the election of Pope Francis, Cardinal Jorge Mario Bergoglio of Argentina, at the Vatican March 14, 2013. Pope Francis, barely 12 hours after his election, quietly left the Vatican early on Thursday to pray for guidance at a Rome basilica as he looks to usher a Catholic Church mired in intrigue and scandal into a new age of simplicity and humility. REUTERS/Christian Hartmann (VATICAN - Tags: RELIGION TPX IMAGES OF THE DAY)