The Catholic Church has certainly been afflicted by a crisis of faith in recent decades. But is this a crisis that began with the reforms of Vatican II, as some claim? Or has this crisis been festering at the heart of society and the Church for centuries before Vatican II, and ultimately is not rooted in liturgical reforms or conciliar declarations, but something much deeper? By exploring the encyclicals of the last several hundred years, Ignorance of Things Divine follows the thread of the crisis through the centuries, revealing how the Magisterium identified it long ago-and provided a remedy.