《资治通鉴·后周纪·后周纪四》
李延邹用忠义来斥责郭廷谓，郭廷谓用兵器相逼，李延邹将笔掷地说： 大丈夫最终决不辜负国家去为叛臣写投降表书！ 
延邹责以忠义，廷谓以兵临之，延邹掷笔曰： 大丈夫终不负国为叛臣作降表！ 
Li Yanzou refuted Guo Tingwei with loyalty and righteousness, Guo Tingwei threatened with weapons, Li Yanzou threw his pen on the ground and said: A real man will never let his country down by writing a surrender memorial for a rebel!