《论衡·卷三十·自纪篇》
当他做乘田、委吏的时候，没有不高兴的心情；当他做司空、相国的时候，也没有欢乐的表现。
为乘田委吏，无於邑之心；为司空相国，无说豫之色。
When he was in the office of Chengtian or Weili, he was not unhappy. When he was in the office of Sikong or Xiangguo, he did not show any joy.