This book is compiled from talks given mostly in 2001 by Ajahn Sumedho. The first edition was originally published in 2004, but has long since been out of print. This new edition has been reviewed for typographical errors and redesigned, and some re- editing has been done. However, the Dhamma content has not been changed. The talks were transcribed, edited and proofread by various members of the sangha as well as people from the broader community, and a variety of people helped with the creation of the front cover. The editors wish to express their deep gratitude for all of the generous and kind-hearted effort put into making these teachings available in book format.