My office is a train. We are thundering through the endless hours of the predawn on a vast circular track, like atoms in a supercollider. I shuttle between two railway cars. In the first, I work with a clerk to attend to the needs of an eminent man in decline. This involves sharpening the razors, mixing up the shaving cream with a horsehair brush, and filling a large metal bowl with lukewarm water. In the other car, I do my best to study under a hot incandescent light and eventually fall asleep under a large quilt. I am woken by a young nurse.