《史记·八书·乐书》
强暴之民不起而作乱，诸候对天子恭敬臣服，甲兵不起，刑罚不用，百姓无有忧患，天子没有怨怒，这样就是乐事发达了。
暴民不作，诸侯宾服，兵革不试，五刑不用，百姓无患，天子不怒，如此则乐达矣。
When the violent people do not rise up and cause chaos, and the princes respect and surrender to the emperor, the weapons and armors will not be used, the punishment will not be used, the people will have no worries, and the emperor will have no resentment, that is the development of music.