A block or two later I passed a mailman, in uniform, getting out of his mail truck, which he’d parked on the side of the road, and when he saw me jogging and I’d said hello to him he said, “I wish I was doing that,” and I said, “It’s not so cold today,” even though it was a little cold, and there was still snow on the roads and on the sidewalks. Because that was the first thing that it occurred to me to say.