知伯索地於魏桓子
Zhi Bo Demands Land from Lord Huan of Wei
知伯索地於魏桓子,魏桓子弗予。任章曰:「何故弗予?」桓子曰:「無故索地,故弗予。」任章曰:「無故索地,鄰國必恐;重欲無厭,天下必懼。君予之地,知伯必憍。憍而輕敵,鄰國懼而相親。以相親之兵,待輕敵之國,知氏之命不長矣!《周書》曰:『將欲敗之,必姑輔之;將欲取之,必姑與之。』君不如與之,以驕知伯。君何釋以天下圖知氏,而獨以吾國為知氏質乎?」君曰:「善。」乃與之萬家之邑一。知伯大說,因索蔡、皋梁於趙,趙弗與,因圍晉陽。韓、魏反於外,趙氏應之於內,知氏遂亡。
Zhi Bo demands land from Lord Huan of Wei, and Lord Huan refuses. Ren Zhang says: "Why refuse?" Lord Huan says: "He demands land without cause — that is why I refuse." Ren Zhang says: "If he demands land without cause, neighboring states will be alarmed. If his greed is insatiable, All-Under-Heaven will be frightened. If you give him the land, Zhi Bo will grow arrogant. Once arrogant, he will underestimate his enemies; once the neighbors are frightened, they will draw close to one another. When allied troops confront a state that underestimates its enemies, the Zhi clan's life will not be long. The Book of Zhou says: 'If you would defeat someone, first support him; if you would take from someone, first give to him.' Better to give and let Zhi Bo grow proud. Why would you give up the chance to let All-Under-Heaven conspire against the Zhi, and instead make our state alone the target of Zhi aggression?"
The lord says: "Good." He gives Zhi Bo a town of ten thousand households. Zhi Bo is greatly pleased and proceeds to demand Cai and Gaoliang from Zhao. Zhao refuses. Zhi Bo besieges Jinyang. Han and Wei turn against him from outside; the Zhao respond from within. The Zhi clan is destroyed.
Notes
Zhi Bo (知伯), also known as Zhi Yao (知瑤), was the head of the Zhi clan and the most powerful minister in the state of Jin circa 455 BC. His overreach led to the famous Partition of Jin, which created the states of Han, Zhao, and Wei — the event that conventionally marks the beginning of the Warring States period.
Lord Huan of Wei (魏桓子) was the head of the Wei clan within Jin, predecessor to the independent Wei state.
Ren Zhang (任章) was an advisor to the Wei clan. His counsel here is a textbook lesson in the strategic value of giving your enemy enough rope — a principle the Zhanguoce never tires of illustrating.
The quotation from the Book of Zhou (周書) also appears in the Laozi (ch. 36), suggesting a shared proverbial tradition. The logic is pure judo: feed the opponent's worst instincts until he destroys himself.
Jinyang (晉陽) was the Zhao clan's stronghold, near modern Taiyuan, Shanxi. The siege of Jinyang in 453 BC is one of the defining events of Chinese political history.
