Description:He may be the new leader of the world's 1.2 billion Catholics. But Jorge Mario Bergoglio, now known as Pope Francis, is not being seduced by the trappings of his new office. A humble man with a concern for the poor, he's a fan of public transport. And back home in Argentina he lived in a simple apartment. His new name honours St Francis of Assisi, who famously shunned wealth for a life of poverty and simplicity.(1:39)