《北史·列传·卷二十八》
人们都认为郭祚做的不对，郭祚常对别人说： 我与李彪是亲密的朋友，怎能不向着他，他又怎么能怨恨我呢？ 
时论以此非祚。祚每曰： 尔与义和至友，岂能饶尔而怨我乎。 
Everyone thought that Guo Zuo had done the wrong thing. Guo Zuo often told others: "I'm a close friend of Li Biao, how could I not be biased toward him, and how could he resent me?"