Sun Tzu
The Chinese general credited with The Art of War, the 2,500-year-old argument that the best victory is the one won without fighting.
Sun Tzu is the most quoted military writer in the world, and almost nothing about him is certain. The Art of War, thirteen short chapters credited to a general named Sun Wu who served the state of Wu around 500 BC, argues that war is a matter of calculation rather than courage, that the best campaign is the one you win before the fighting starts, and that deception is not a dirty trick but the entire business.
The historian Sima Qian tells the story that made his name. King Helu of Wu, testing him, asked whether he could drill anyone, even palace women. Sun Wu divided 180 of them into two companies, put the king's two favorite concubines in charge, and gave an order. They laughed. He repeated the order and explained it slowly, then said that if instructions are clear and troops still disobey, the fault lies with the officers, and had the two favorites executed over the king's objections. The rest drilled in silence. The point of the story is not cruelty. It is that discipline is a system, not a mood.
What the book actually says
Chapter three sets the ranking. The best strategy is to attack the enemy's plan. Next best is to break up his alliances. Next is to attack his army. Worst of all is to besiege his cities, which costs months and kills your own men. Winning a hundred battles is not the goal. Making the enemy give up is the goal.
The rest is practical. Know the enemy and know yourself and you need not fear a hundred battles. Move fast, because no country has ever profited from a long war. Feed your army from enemy supplies, because hauling grain across a country ruins your own economy. Attack where he is weak, avoid where he is strong. Leave a surrounded enemy a way out, because a man with nothing to lose fights much harder. The last chapter is about spies, which Sun Tzu treats as the cheapest weapon available: an army costs a fortune, and a bribe costs almost nothing.
Scholars argued for centuries about whether Sun Wu existed at all and whether the text was written long after him. In 1972 workers digging on Yinqueshan hill in Shandong opened a Han dynasty tomb and found bamboo slips carrying both The Art of War and a separate military text by Sun Bin, a later descendant. That settled the oldest part of the dispute: two authors, two books. The version we read probably took shape during the Warring States period, a few generations after the man it names.
Why it travels
The book reached Europe in 1772, translated into French by a Jesuit missionary in Beijing, and sat there unread. It became famous in the twentieth century because of who used it. Mao Zedong built his doctrine of protracted war on it. Vo Nguyen Giap read it. Its lines turn up in American military manuals and on the Marine Corps reading list. From the 1980s it became a business bestseller, which is when it started being quoted by people who had not read past chapter one.
It survives because it is not really about the Spring and Autumn period. It is about any contest where information is expensive, resources are limited, and the other side is also thinking. That is why the chapters on deception, alliances, and spies read as though they were written last year, and why the chapters on chariots and fire attacks do not.