Sun Wu, style name Changqing, better known as Sun Tzu or Sunzi, was an ancient Chinese military general, strategist and philosopher from the Zhou Dynasty. He is traditionally believed to be 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 an author of The Art of War and through legend.
Sun was a historical figure whose authenticity is questioned by historians. Traditional accounts place him from c. 544–496 BC in the Spring and Autumn Period of China as a military general serving under King Helü of Wu. Modern scholars accepting his historicity place the completion of The Art of War in the Warring States Period, based on the descriptions of warfare in the text, and on the similarity of text's prose to other works completed in the early Warring States period.
Traditional accounts state that his descendant, Sun Bin, also wrote a treatise on military tactics, titled Sun Bin's Art of War. Both Sun Wu and Sun Bin were referred to as Sun Tzu in classical Chinese writings, and some historians believed that Sun Wu was in fact Sun Bin until Sun Bin's own treatise was discovered in 1972. During the 19th and 20th centuries, Sun Tzu's The Art of War grew in popularity and saw practical use in Western society. His work continues to influence both Asian and Western culture and politics.
Anger may in time change to gladness; vexation may be succeeded by content. But a kingdom that has once been destroyed can never come again into being; norcan the dead ever be brought back to life. Hence the enlightened ruler is heedful, and the good general full of caution. This is the way to keep a country at peace and an army intact.