Two popes — one retired, one reigning — cause a furor

VATICAN CITY — Ever since Benedict XVI announced he would become the first pope in 600 years to resign, Catholic theologians, canon lawyers and others warned of the potential confusion in having two popes living side by side in the Vatican, one reigning, the other retired but calling himself “emeritus pope” and still wearing the white cassock of the papacy. Their worst fears came true this week. In a saga befitting the Oscar-nominated movie “The Two Popes,” Benedict co-wrote a book reaffirming the “necessity” of a celibate priesthood. There was nothing novel with his position, but the book is coming out at the same time Pope Francis is weighing whether to ordain married men in the...