When you're dreaming, you don't know it's a dream. You might even interpret a dream in your dream - and then wake up and realize it was all a dream. Perhaps a great awakening will reveal this to be a dream as well.
ZhuangziHow do I know that loving life is not a delusion? How do I know that in hating death I am not like a man who, having left home in his youth, has forgotten the way back?
ZhuangziOnly fools imagine they are already awake. How clearly they understand everything! How easily they distinguish this deception from that reality!
ZhuangziThe saying goes, 'The sage rests, truly rests and is at ease.' This manifests itself in calmness and detachment, so that worries and distress cannot affect him, nothing unpleasant can disturb him, his Virtue is complete and his spirit is not stirred up.
ZhuangziThe mind remains undetermined in the great Void. Here the highest knowledge is unbounded. That which gives things their thusness cannot be delimited by things. So when we speak of 'limits', we remain confined to limited things. The limit of the unlimited is called 'fullness.' The limitlessness of the limited is called 'emptiness.' Tao is the source of both. But it is itself neither fullness nor emptiness
Zhuangzi