The perfect man uses his mind as a mirror. It grasps nothing. It regrets nothing. It receives but does not keep.
ZhuangziI know the joy of fishes in the river through my own joy, as I go walking along the same river.
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