I want to tell you about something I overheard in a cafe in Newark, New Jersey, about twenty-five years ago, and about the book that grew out of it, and about why it took me a quarter of a century to understand what I heard. I was teaching at the time. A colleague from my department was sitting near the window with her daughter, a young woman just starting her freshman year of college. I came in, we exchanged the usual pleasantries, and then I sat down at the next table and we performed that ritual of urban public life where you pretend you cannot hear the person three feet away from you. But I could hear her. Her voice had changed. It had acquired weight. She was no longer making conversation. She was delivering an instruction. She pointed at her daughter and tapped the table with her finger, and she said: "Go to every funeral. Even if you don't want to. Even if you don't know them. If you know the people around them, you go."