《资治通鉴·魏纪·魏纪一》
王国的文学和防辅商量说： 我们奉命观察北海王的举止行为，他有过失，我们要上报朝廷；有善行，我们也应该向朝廷汇报。 
文学、防辅相与言曰： 受诏察王举措，有过当奏，及有善亦宜以闻。 
The minister of literature and defense counselor in Beihai negotiated and said, "We are ordered to observe the King of Beihai's conduct. If he makes a mistake, we must report it to the court. If he does something good, we must also report it to the court.