A vibrant new translation and a guided tour through the history and strategic lessons of the most influential martial arts treatise ever written. Written over 300 years ago, this classic work speaks equally to the businessperson, philospher and the practitioner of martial arts. Master Hidy Ochiai is considered as a living legend in the martial arts world. His translation and annotations, which clarify the text's lessons in strategy for the contemporary reader, represent a seven year effort. Overlook's original edition has to date sold over 600,000 copies.