《资治通鉴·汉纪·汉纪五》
灌将军仔细审视魏勃，笑着说： 人说魏勃武勇，其实不过是个狂妄而平庸的人罢了，能有什么作为呢！ 
灌将军熟视笑曰： 人谓魏勃勇，妄庸人耳，何能为乎！ 
General Guan took a good look at Wei Bo and, laughing, said, "Everyone says that Wei Bo is brave. That is no more than the swaggering of a savage. What can be done with that!"