Pope Benedict XVI delivers the Sunday Angelus address from the window of his studio at the Vatican, overlooking St. Peter's Square, marking Holy Family Day and issuing greetings in several languages, Sunday, Dec. 27, 2009. (AP Photo/Riccardo De ...

Pope Benedict XVI, framed by a Christmas tree, greets the faithful during the Angelus prayer he celebrated from his studio window overlooking St. Peter's square at the Vatican, Tuesday, Dec. 8, 2009. (AP Photo/Pier Paolo Cito)

Pope Benedict XVI, framed by a branch of a Christmas tree, delivers his blessing during the Angelus prayer from his studio window overlooking St. Peter's square at the Vatican, Tuesday, Dec. 8, 2009. (AP Photo/Gregorio Borgia)

Pope Benedict XVI greets the faithful from aboard his popemobile, during the weekly general audience in St. Peter's square at the Vatican, Wednesday, Oct. 14, 2009. (AP Photo/Andrew Medichini)