The faithful fill St Peter's Square ahead of Pope Benedict XVI final general audience before his retirement on February 27, 2013 in Vatican City, Vatican. (Photo by Peter Macdiarmid/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful as he arrives in St Peter's Square on February 27, 2013 in Vatican City, Vatican. (Photo by Peter Macdiarmid/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful as he arrives in St Peter's Square in the Popemobile on February 27, 2013 in Vatican City, Vatican. (Photo by Peter Macdiarmid/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI gestures to the crowd in St Peter's Square on February 27, 2013 in Vatican City, Vatican. (Photo by Oli Scarff/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
The faithful fill St Peter's Square as Pope Benedict XVI attends his last public audience on February 27, 2013 in Vatican City, Vatican. (Photo by Peter Macdiarmid/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI travels through the crowd in the popemobile in St Peter's Square on February 27, 2013 in Vatican City, Vatican. (Photo by Carsten Koall/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI travels through the crowd in the popemobile in St Peter's Square on February 27, 2013 in Vatican City, Vatican. (Photo by Carsten Koall/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful as he arrives in St Peter's Square for his final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful as he arrives in St Peter's Square for his final general audience on February 27, 2013 in Vatican City, Vatican. . (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful as he leaves St Peter's Square at the end of his final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
A nun smiles as she attends Pope Benedict XVI's final general audience in St Peter's Square before his retirement on February 27, 2013 in Vatican City, Vatican. (Photo by Christopher Furlong/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI kisses a child as he arrives in St Peter's Square for his final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Members of the Swiss Guard patrol St Peter's Square before Pope Benedict XVI's final weekly public audience on February 27, 2013 in Vatican City, Vatican. (Photo by Oli Scarff/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Nuns attend Pope Benedict XVI's final general audience in St Peter's Square before his retirement on February 27, 2013 in Vatican City, Vatican. (Photo by Christopher Furlong/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful as he arrives in St. Peter's Square for his final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
A Brazillian monk waves a flag as he attends Pope Benedict XVI's final general audience in St Peter's Square before his retirement on February 27, 2013 in Vatican City, Vatican. (Photo by Christopher Furlong/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI travels in the Popemobile through St Peter's Square on February 27, 2013 in Vatican City, Vatican. (Photo by Oli Scarff/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful as he arrives in St. Peter's Square for his final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful as he arrives in St. Peter's Square for his final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI waves to the faithful gathered in St. Peter's Square during his final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Pope Benedict XVI kisses a child lifted up by the Pontiff's personal secretary Georg Ganswein, as he leaves St. Peter's Square at the end of his final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
A pilgrim attends Pope Benedict XVI's final general audience in St Peter's Square before his retirement on February 27, 2013 in Vatican City, Vatican. (Photo by Christopher Furlong/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Archbishop of New York cardinal Timothy Dolan (C) greets his colleagues as he arrives in St. Peter's Square before the Pope Benedict XVI's final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Archbishop of New York cardinal Timothy Dolan (R) greets his colleagues as he arrives in St. Peter's Square before the Pope Benedict XVI's final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Archbishop of New York cardinal Timothy Dolan (R) greets an American boy as he leaves St. Peter's Square at the end of the Pope Benedict XVI's final general audience on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Cardinals sit in St Peter's Square as Pope Benedict XVI delivers his final weekly public audience on February 27, 2013 in Vatican City, Vatican. (Photo by Oli Scarff/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Archbishop of Washington cardinal Donald Wuerl (C) attends Pope Benedict XVI's final general audience in St. Peter's Square on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
Pope Benedict XVI Holds His Final General Audience Before His Retirement
Cardinals attend Pope Benedict XVI's final general audience in St. Peter's Square on February 27, 2013 in Vatican City, Vatican. (Photo by Franco Origlia/Getty Images)
