About Sun Tzu:
Sun Tzu is best known by is actually an honorific which means "Master Sun": His birth name was Sun Wu and he was known outside of his family by his courtesy name Changqing. He is traditionally credited as the author of The Art of War, an extremely influential ancient Chinese book on military strategy. Sun Tzu has had a significant impact on Chinese and Asian history and culture, both as the author of The Art of War and as a legendary historical figure.
Therefore, just as water retains no constant shape, so in warfare there are no constant conditions.
Sun TzuStanding on the defensive indicates insufficient strength; attacking, a superabundance of strength.
Sun Tzu