《资治通鉴·周纪·周纪五》
赵括的母亲询问原因，赵奢说： 带兵打仗，就是出生入死，而赵括谈论起来却很随便。
括母问其故，奢曰： 兵，死地也，而括易言之。
Zhao Kuo's mother asked the reason, and Zhao She said: leading soldiers to fight is a life-or-death situation, but Zhao Kuo talks about it casually.