《史记·七十列传·刺客列传》
吴公子光说： 那个伍员，父亲、哥哥都是被楚国杀死的，伍员才讲攻打楚国，他这是为了报自己的私仇，并不是真正为吴国着想的。 
吴公子光曰： 彼伍员父兄皆死于楚而员言伐楚，欲自为报私雠也，非能为吴。 
Wu Gongzi Guang said: That Wu Yuan, his father and elder brother were both killed by Chu, Wu Yuan asked to attack Chu, he is here to avenge his personal revenge, not really for Wu.