A Roman Catholic priest use ash to mark a cross on the forehead of a faithful during the Ash Wednesday mass at the holy Family minor basilica parish in Kenya’s capital Nairobi, February 13, 2013. Catholics round the world celebrated Ash Wednesday, which serves as a reminder that “as a man is dust, so unto dust he shall return” and marks the beginning of the season of Lent. REUTERS/Thomas Mukoya (KENYA – Tags: SOCIETY RELIGION ANNIVERSARY)