《汉书·传·何武王嘉师丹传》
现今刘云等能够有谋划弑杀天子而叛乱的阴谋，这是公卿辅臣没有谁能尽心致力于视听来把它消灭压制在没有发生时的缘故啊。
今云等至有图弑天子逆乱之谋者，是公卿股肱莫能悉心务聪明以销厌未萌之故。
Liu Yun and others are now able to conspire to assassinate the emperor and rebel. This is because the ministers and ministers have not devoted themselves to listening and suppressing it when it has not yet occurred.