The fruit of humanity is devotion to one's parents. The fruit of righteousness is to respect one's elders. The fruit of wisdom is to understand these two and not to betray them. The fruit of propriety is to regulate and polish them. The fruit of music is the joy that comes from rejoicing in them. When one rejoices in them, they grow. When they grow, how can they be stopped? And when they cannot be stopped, unconsciously one's feet begin to dance and one's arms begin to wave.