《逸周书·卷一·度训解》
区分了等级，民众就知道和睦；知道了和睦就会知道欢乐,知道了欢乐也会知道识哀伤；知道了欢乐哀伤就知道怎样做一个最明白的人，在朝庭内外分辨好人与恶人。所有民众皆有喜欢有厌恶。得到一点他所爱的就高兴，得到很多他所爱的就欢乐。遇到一点他厌恶的事就忧伤遇到很多他厌恶的事就会悲哀。
凡民生而有好有恶，小得其所好则喜，大得其所好则乐，小遭其所恶则忧，大遭其所恶则哀。
The distinctions of rank and office being thus determined, the people will know who are noble and who inferior; knowing this, they will know their position; knowing their position, they will know rules of礼. Knowing the rules of礼, they will know how to distinguish between right conduct and wrong. The people generally love and hate what they like and hate. Getting a little of what they like, they are pleased; getting much of it, they are delighted; meeting with a little of what they dislike, they are grieved; meeting with much of it, they are sorrowful.