(CNN) Pope Francis, who succeeded a resigning pontiff exactly two years ago, told a Mexican television network Friday he expects his pontificate will be brief. “Four or five years,” he told Televisa. “I do not know, even two or three. Two have already passed. It is a somewhat vague sensation. Maybe it’s like the psychology of the gambler who convinces himself he will lose, so he won’t be disappointed and if he wins, is happy. I do not know.”Francis, who was elected in March 2013 after Pope Benedict XVI stepped down, said his predecessor had reopened a door to more popes emeritus.