Pope Benedict arrives for his weekly general audience at the Paul VI Hall at the Vatican, Feb. 13, 2013.

Pope Benedict XVI opens his arms in greetings as he arrives to lead his Wednesday general audience in Paul VI hall at the Vatican Feb. 13, 2013.

Pope Benedict greets the crowd from the central balcony of St. Peter's Basilica at the Vatican, April 19, 2005.

US Catholics Have Mixed Reactions to Pope's Resignation

Faithful hold banners reading in Latin "Nihil amori Christi praeponere" (Prefer nothing to the love of Christ), and in Italian "Grazie Santita' " (Thank you Your Holiness) during the pope's weekly general audience at the Vatican Feb. 13, 2013.

Pope Benedict arrives to attend a meeting with seminarians at the Romano Maggiore seminary in Rome, February 8, 2013.

Pope Benedict waves as he arrives to lead the weekly general audience in Saint Peter's Square at the Vatican April 18, 2012.

Pope Benedict wears a sombrero, a traditional Mexican hat, while being driven through the crowd before officiating a mass in Silao, Mexico, March 25, 2012.

Pope Benedict holds his cross as he leads a solemn mass in Zagreb, Croatia, June 5, 2011.

Pope Benedict visits the Ardeatine Caves Memorial in Rome, Italy, March 27, 2011.

Pope Benedict leaves after an audience with Vatican-accredited diplomats at the Vatican, January 10, 2011.

Pope Benedict visits the Western Wall, Judaism's holiest prayer site, in Jerusalem's Old City May 12, 2009.

Pope Benedict waves to the crowd gathered in Saint Peter's square during his weekly Angelus blessing at the Vatican, May 16, 2010.

US President Barack Obama and his wife Michelle Obama meet with Pope Benedict at the Vatican, July 10, 2009.

Postcards and calendars are displayed outside a shop at the Vatican February 12, 2013.

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Nuns walk in St. Peter's Square at the Vatican, early Tuesday, Feb. 12, 2013

El vocero de la Santa Sede, Federico Lombardi, se reunió este martes con la prensa en Roma.

Adelina Hidalgo holds a photograph of Pope Benedict as she kneels inside the Metropolitan Cathedral in San Salvador, February 11, 2013.

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Cardinal Peter Kodwo Appiah Turkson of Ghana arrives to attend a mass led by bishop Leonardo Sandri of Argentina in St. Peter's Basilica at the Vatican, April 13, 2005.

A lightning strikes St Peter's dome at the Vatican, February 11, 2013. Pope Benedict XVI announced he will resign as leader of the world's 1.1 billion Catholics on February 28 because his age prevented him from carrying out his duties -- an unprecedented

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