The reform of the Catholic Church in the sixteenth century was historically as important as the contemporary Protestant Reformation. Though never committed solely to fighting Protestantism, it inevitably also became a Counter Reformation, since it soon faced the threat created by Luther and his successors. The century between the career of Ignatius Loyola and that of Vincent de Paul became a classic age of Catholicism. The lives of its saints, popes and secular champions could hardly be made more fascinating by any novelist. While paying due attention to the great characters, the author also considers the broader political, social and cultural features of the Counter Reformation. A.G. Dickens is Emeritus Professor of History at the University of London.