Cardinal Luis Antonio Tagle celebrates mass during Ash Wednesday, the first day of Lent, at the Roman Catholic Archbishop chapel in Manila, February 13, 2013. Tagle, 55, who became a cardinal in November 2012, is among those mentioned as possible successors of Pope Benedict XVI, who surprised the world on Monday when he announced his resignation due at the end of the month. REUTERS/Erik De Castro (PHILIPPINES - Tags: RELIGION)