You are never too old to set another goal or to dream a new dream.
The only thing that separates us from the animals is our ability to accessorize.
牛马生着四足,这是天性;给马戴上笼头,给牛穿上鼻绳,就是人为。所以说,不要人为毁灭天性,不要用故意造作去毁灭天命,不要以德行去为名利殉葬,谨守天道勿使丧失,这就叫返归本真。