From left, Cardinals Sean O'Malley, Daniel DiNardo and Francis George meet the journalists at the Pontifical North American college in Rome, Thursday, Feb. 28, 2013. In a final farewell

 

              From left, Cardinals Sean O
From left, Cardinals Sean O'Malley, Daniel DiNardo and Francis George meet the journalists at the Pontifical North American college in Rome, Thursday, Feb. 28, 2013. In a final farewell to his cardinals as pope, Benedict XVI tried to dispel concerns about the unprecedented future awaiting the Catholic Church, with one reigning and one retired pope living side-by-side. He pledged his "unconditional reverence and obedience" to his successor. (AP Photo/Gregorio Borgia)