VATICAN CITY, VATICAN - MARCH 19:  Pope Francis greets the faithful during the Inauguration Mass for Pope Francis in St Peter's Square on March 19, 2013 in Vatican City, Vatican. The mass was held in front of an estimated crowd of up to one million pilgrims and faithful who have filled the square and the surrounding streets to see the former Cardinal of Buenos Aires officially take up his role as pontiff. Pope Francis’ inauguration took place in front of Cardinals and spiritual leaders as well as heads of state from around the world.  (Photo by Christopher Furlong/Getty Images)