The universe is our greatest teacher, our greatest friend. It is always teaching us the Art of Peace. Study how water flows in a valley stream, smoothly and freely between the rocks. Everything—mountains, rivers, plants, and trees—should be your teacher. The world’s wisdom is contained in books, and by studying the words of the wise, countless new techniques can be created. Study and practice, and then reflect on your progress. The Art of Peace is the art of learning deeply, the art of knowing oneself.