If you persist in trying to attain what is never attained (It is Tao's gift), if you persist in making effort to obtain what effort cannot get, if you persist in reasoning about what cannot be understood, you will be destroyed by the very thing you seek. To know when to stop, to know when you can get no further by your own action, this is the right beginning!
ZhuangziBig? Sure. But, he can't catch mice! So for your big tree. No use? Then plant it in the wasteland - in emptiness. Walk idly around it and rest under it's shadow. No axe or saw prepares its end. No one will ever cut it down. Useless? You should worry!.
ZhuangziYour mind must become one, do not try to understand with your ears but with your heart. Indeed, not with your heart but with your soul.
ZhuangziLook at this window: it is nothing but a hole in the wall, but because of it the whole room is full of light. So when the faculties are empty, the heart is full of light.
ZhuangziIf there is existence, there must be non-existence. And if there was a time when nothing existed, there must have been a time before that - when even nothing did not exist. Suddenly, when nothing came into existence, could one really say whether it belonged to the category of existence or non-existence?
Zhuangzi