

Pope Francis waves as he arrives in St. Peter's Square for his inauguration Mass at the Vatican, Tuesday, March 19, 2013. Michael Sohn/AP
Pope Francis celebrates his installation Mass as cardinals stand around him, in St. Peter's Square at the Vatican, Tuesday, March 19, 2013. Pope Francis has urged princes, presidents, sheikhs, and thousands of ordinary people gathered for his installation Mass to protect God's creation, the weakest and the poorest of the world. Andrew Medichini/AP
Nuns run in Saint Peter's Square to take a good vantage point before the inaugural mass for Pope Francis at the Vatican, March 19, 2013. Max Rossi/Reuters
Pope Francis waves to crowds as he arrives to his inauguration mass in St. Peter's Square at the Vatican, Tuesday, March 19, 2013. Alessandra Tarantino/AP
Faithful watch a televised broadcast of the inaugural mass of Pope Francis near the Metropolitan Cathedral in Buenos Aires March 19, 2013. Pope Francis celebrates his inaugural mass on Tuesday among political and religious leaders from around the world and amid a wave of hope for a renewal of the scandal-plagued Roman Catholic Church. Marcos Brindicci/Reuters
Newly elected Pope Francis I, Cardinal Jorge Mario Bergoglio of Argentina, checks out of the church-run residence March 14, 2013 where he had been staying in Rome. Pope Francis returned to the Church-run residence where he was staying before becoming pontiff, and insisted on paying the bill, despite now effectively being in charge of the business, the Vatican said. Osservatore Romano/Reuters
Then Cardinal Jorge Mario Bergoglio of Argentina washes and kisses the feet of patients of the Hogar de Cristo shelter for drug users, during a Holy Thursday mass in the Parque Patricios neighborhood of Buenos Aires, March 20, 2008. Enrique Garcia Medina/Reuters
In this Dec. 12, 2008 photo, Argentina's President Cristina Fernandez (l.) shakes hands with Buenos Aires' then-Archbishop Jorge Bergoglio in Lujan, Argentina. DyN/AP
Argentina's Cardinal Jorge Mario Bergoglio (2nd l.) travels on the subway in Buenos Aires, Argentina in 2008. Bergoglio, now Pope Francis, was known for taking the subway and mingling with the poor of Buenos Aires while he was archbishop. Pablo Leguizamon/AP
Pope John Paul II (l.)embraces Argentine Cardinal Jorge Mario Bergoglio on the day Bergoglio was elevated to cardinal in Vatican City, Feb. 21, 2001. Buenos Aires Archbishop Office/AP
Argentine seminarian Jorge Mario Bergoglio smiles for a portrait at the El Salvador school where he taught literature and psychology in Buenos Aires, Argentina, 1966. El Salvador School/AP
Saint Peter's keys, portrayed on the coat of arms of the Vatican, are seen on the floor of Saint Peter's Basilica at the Vatican. Max Rossi/Reuters