《汉书·传·匈奴传下》
高祖时有刘敬，吕后时有樊啥、季布，孝文帝时有贾谊、晁错，孝武帝时有王恢、韩安国、朱买臣、公孙弘、董仲舒，人们坚持己见，有相同的，有不同的，然而归纳起来，也就是两种意见。
高祖时则刘敬，吕后时樊哙、季布，孝文时贾谊、朝错，李武时王恢、韩安国、朱买臣、公孙弘、董仲舒，人持所见，各有同异，然总其要，归两科而已。
There was Liu Jing during the reign of Gaozu, Fan Qu and Ji Bu during the reign of Empress Lu, Jia Yi and Chao Cuo during the reign of Emperor Wen, and Wang Hui, Han Anguo, Zhu Maichen, Gongsun Hong, and Dong Zhongshu during the reign of Emperor Wu. People stuck to their own opinions and some agreed with each other, some disagreed. However, generally speaking, it can be boiled down to two views.