— Wen-tzu

Emptiness means there is no burden within. Evenness means the mind is untrammeled. When habitual desires do not burden you, this is the consummation of emptiness. When you have no likes or dislikes, this is the consummation of evenness. When you are unified and unchanging, this is the consummation of calmness. When you are not mixed up in things, this is the consummation of purity. When you neither grieve nor delight, this is the consummation of virtue.