STUDY THE STALLS OF A SEMINARY BATHROOM and chances are you will find the following scrawled out in ballpoint: “Nietzsche: God is Dead. God: Nietzsche is dead.” The quip relies on a misreading—God, for Nietzsche, did not die like your grandmother or pet turtle might die. God died like a language might die. In a secular world, belief becomes unbelievable. But the bathroom graffiti retains a bit of truth. Nietzsche, writing in 1882, recognized the collapse of religion. Today, the situation has changed: God is undead.

[. . .]