According to legend, Saint Francis heard the crucified Christ speak: "Rebuild my church." For Jorge Mario Bergoglio, who chose the name Francis, these words are a guiding principle. More vigorous and radical than his predecessors, he approaches the renewal of the Church. Humility and mercy, along with modesty in lifestyle, are to accompany fundamental reforms. But who is this man, and what has shaped him? Why did the Argentine become pope? How is he changing the Catholic Church, and who are his opponents? Daniel Deckers, one of the best experts on the Vatican, paints a nuanced and captivating portrait of the man who aims to lead the Catholic Church into the 21st century in this brilliantly written biography.