By wading into politics, the Church abandons its true mission, weakens its authority, and risks becoming just another partisan voice in an already divided world.One of the great tragedies of the Enlightenment and its aftermath was that Christianity in general and the Catholic Church in particular lost faith in their legitimacy and in the legitimacy of their mission. As a result, they surrendered that mission’s otherworldliness and agreed to fight only on temporal grounds. In other words, when the Church responded to its attackers, it did so not on its own terms but on the terms—and in the terms—of...