Roman Catholicism stands at a crossroads, a classic "best of time, worst of times" moment. On the one hand, the Catholic Church remains by far the largest branch of the worldwide Christian family, and is growing at a remarkable clip. Yet the Church has also been rocked by a series of scandals related to the sexual abuse of minors by clergy, and, even more devastating, the cover-up by the Church hierarchy. The Church has enormous residual strength...