German Cardinal Joseph Ratzinger delivers the homily during a Mass in St. Peter's Basilica at the Vatican, Monday April 18, 2005, as the cardinals who will elect a new pope made their last public appearance before sequestering themselves inside the Sistine Chapel later in the day. Ratzinger, the powerful dean of the College of Cardinals, used his homily at the Mass dedicated to electing the next pope to warn cardinals and the faithful about tendencies that he considered dangers to the faith: sects, ideologies like Marxism, liberalism, atheism, agnosticism and relativism.
Cardinals walk in procession during a Mass in St. Peter's Basilica at the Vatican, Monday April 18, 2005, in their last public appearence before sequestering themselves inside the Sistine Chapel later in the day. Thousand of pilgrims and tourist packed St. Peter's Basilica and the square to take a last glimpse of the cardinals who will elect the next head of the Roman Catholic Church during the conclave. (AP Photo/Pier Paolo Cito)