Doctrinaire in chief During nearly a quarter-century as prefect of the Congregation for the Doctrine of the Faith, Ratzinger became known for disciplining errant theologians, particularly those who espoused the Liberation Theology popular in Latin America in the 1970s and ’80s. As John Paul’s right-hand man on doctrinal matters, Ratzinger wrote documents reinforcing church teaching opposing homosexuality, abortion and euthanasia, and asserting that salvation can only be found in the Catholic Church. But Ratzinger was also responsible for one of the most important in-house reforms at the Vatican: requiring all cases of clergy sex abuse be sent to his office...