《史记·八书·乐书》
乐使人际关系敦厚和睦，尊神而服从于天；礼能分别宜贵宜贱，敬鬼而服从于地。
乐者敦和，率神而从天；礼者辨宜，居鬼而从地。
Music makes interpersonal relationships thick and harmonious, respecting gods and obeying the heavens; rituals can distinguish between the right and the wrong, and respecting ghosts and obeying the earth.