《资治通鉴·汉纪·汉纪五十四》
张杨性格宽厚仁慈，没有威严，不讲法治。部下有人叛变而被发觉，他却对着叛徒流眼泪，问题予以原谅，不加追问，因此终于被害。
杨性仁和，无威刑，下人谋反发觉，对之涕泣，辄原不问，故及于难。
Zhang Yang has a generous and kind personality, but no dignity and no respect for the rule of law. When his subordinates betray him and are discovered, he weeps for the traitor, forgives him, and does not pursue the matter, which is why he is finally harmed.