《旧唐书·列传·卷一百四十》
曹王李明任州刺史，不遵守法令制度，孔祯常常进行规谏，李明说： 我是皇上的弟弟，哪里就会有失于为王呢！ 
曹王明为刺史，不循法度，祯每进谏。明曰： 寡人天子之弟，岂失于为王哉！ 
Cao Wang Li Ming was the governor of the state, but he didn't follow the laws and regulations. Kong Zheng often advised him, Li Ming said: I am the emperor's younger brother, how could I have failed as a king?