This landmark guide to the practice of Chan Buddhism includes texts from the great living Chan master Sheng Yen, as well as material by three key ancestors of his lineage, going back to medieval times: Yuanyun Jiexian, Boshan Yuanlai, and Xuyun. Though the texts were written hundreds of years apart, they are all remarkably lucid and are perfect for beginners or experienced practitioners today. All the main points of spiritual practice are covered, from philosophical underpinnings to the methods of practice, how to approach problems and obstacles, and how to bring the practice into every aspect of life.