We must have been fifteen or sixteen when we discovered the church visitor’s book. It was an old church, maybe medieval, and I would pass it with my school friends on our way to the town center. I’m not sure what possessed us to go in; it might have been my idea. I’ve always loved old churches. For a long time, I would tell myself that I liked the sense of history or the architecture, which was true as far as it went. Like the narrator in Philip Larkin’s poem “Church Going,” I would venture into any church I found,...