Source: The New York Times We are spiritual beings. That’s why I joined the millions of people who make some form of religious pilgrimage. By Timothy Egan Not long ago, I found myself inside a place that claims to be the oldest church in the English-speaking world — St. Martin’s in Canterbury, England, a few steps from the start of the ancient pilgrimage trail of the Via Francigena. It was my first stop on a pathway of more than a thousand miles, a trail from that modest clump of sixth-century stone and brick to the Vatican home of a pope struggling…