My grandfather was the Reverend Calvin Titus Perkins, known as C.T. He was a Southern Baptist evangelist—a traveling preacher in Oklahoma, the former Indian Territory. He arrived in a covered wagon as a very young boy, and the famous Oklahoma dust seems embedded in the black-and-white photos I’ve seen of him. He was a man of passion but also a lover of order, a believer in rules. The bare bones Calvinism that flourished on the frontier offered him not only a faith but a way out of chaos and poverty.