Pope Francis walks past the statue of the Virgin Mary as he celebrates a mass at the Sanctuary of Our Lady of Fatima Saturday, May 13, 2017, in Fatima, Portugal. The pontiff will canonize on Saturday two poor, illiterate shepherd children whose visions of the Virgin Mary 100 years ago marked one of the most important events of the 20th-century Catholic Church. (AP Photo/Armando Franca)