《论衡·卷二十六·知实篇》
东郭牙回答说： 我听说君子脸上有三种神色：婚庆喜事时，表露出欢乐高兴的神色；举办丧事时，表露出愁苦哀伤的神色；发生战争时，表露出非常愤怒以致气得四肢发抖的神色。
对曰： 臣闻君子有三色：驩然喜乐者，钟鼓之色；愁然清净者，衰绖之色；怫然充满手足者，兵革之色。
Dong Guo Ya responded: I heard that a gentleman has three expressions on his face: joyful and happy when celebrating a wedding; sad and sorrowful when holding a funeral; very angry and with trembling limbs when at war.