With a lot of practice, a young boy learns from his old teacher how to listen to the sounds and songs of the natural world. When you know "the other way to listen," you can hear the wild-flower seed bursting open. You hear rocks murmuring and hills singing, and it seems like the most natural thing in the world. Of course, it takes a lot of practice, and you can't be in a hurry. Most people never hear these things at all. This...