His mother had told him never to trust people without smiley lines. It means they can't laugh, she said, and people who can't laugh don't have souls. What's a soul? he'd asked. It's all the kind things that a person's ever done, she said. It shows in their face when they smile, because laughter is the music of the soul. If the soul never hears music then it dies, which is why unkind people don't have smiley lines.