《后汉书·列传·蔡邕列传下》
他忠孝素著，以莫须有获罪，杀了他，恐怕失去了人心呢！ 王允说 ：从前汉武帝不杀司马迁，使他写谤书，流传后世。
且忠孝素著，而所坐无名，诛之无乃失人望乎 允曰 昔武帝不杀司马迁，使作谤书，流于后世。
He has always been loyal and filial. If he is convicted of a crime that does not exist, he will be killed, and I am afraid that the people's hearts will be lost. Wang Yun said: "In the past, Emperor Wu of the Han Dynasty did not kill Sima Qian, so that he wrote slanderous books, which were passed down to later generations." 