《后汉书·列传·王充王符仲长统列传》
他以为那些见识浅薄的儒生死守住书本上的章句，失掉了书中的精髓和真谛。于是闭门深思，谢绝那些贺喜吊丧的应酬。家中的门上、窗户上、墙壁上都放着刀和笔，撰写了《论衡》八十五篇，共二十多万字，解释了物类的异同，匡正了当时人对某些事物的疑惑。
以为俗儒守文，多失其真，乃闭门潜思，绝庆吊之礼，户牖墙壁各置刀笔。著《论衡》八十五篇，二十余万言，释物类同异，正时俗嫌疑。
He believed that those narrow-minded Confucian scholars clung to the words in books and lost the essence and truth of the books. So he closed his doors and pondered deeply, refusing to accept the congratulations and condolences of others. In his house, there were knives and pens on the doors, windows, and walls. He wrote 85 chapters of "Lun Heng", totaling more than 200,000 words, explaining the differences between things and correcting the doubts of people about certain things at that time.