John Julius Norwich makes a point of saying in the introduction to his history of the popes that he is “no scholar” and that he is “an agnostic Protestant.” The first point means that while he will be scrupulous with his copious research, he feels no obligation to unearth new revelations or concoct revisionist theories. The second means that he has “no ax to grind.” In short, his only agenda is to tell us the story.