《资治通鉴·汉纪·汉纪十》
即使是常人都要深受习俗的影响，何况鲁哀公之类的人呢！ 学识渊博，出类拔萃 ，河间献王刘德可说近似这样的人。
自凡人犹系于习俗，而况哀公之伦乎！ 夫唯大雅，卓尔不群 ，河间献王近之矣。
Even ordinary people are often influenced by custom, so what more is true of people like Duke Ai of Lu? Liu De, Prince of Hejian, a man of great learning and marked ability, was something close to this type.