To be constant is to be useful. To be useful is to realize one's true nature. Realization of one's true nature is happiness. When one reaches happiness, one is close to perfection.
ZhuangziBeing is thoughtless-beyond and beneath all categories of thought. Expression is the realization of creative thought. Being is still; expression, moving. But then if I do not strive, who will?
ZhuangziWhen I look at what the world does and where people nowadays believe they can find happiness, I am not sure that that is true happiness. The happiness of these ordinary people seems to consist in slavishly imitating the majority, as if this were their only choice. And yet they all believe they are happy. I cannot decide whether that is happiness or not. Is there such a thing as happiness?
Zhuangzi