Calculate what man knows and it cannot compare to what he doesn't know. Calculate the time he is alive and it cannot compare to the time before he was born. Yet man takes something so small and tries to exhaust the dimensions of something so large!
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?
ZhuangziSorrow and happiness are the heresies of virtue; joy and anger lead astray from TAO; love and hate cause loss of virtue. The heart unconscious of sorrow and happiness - that is perfect virtue. One, without change - that is perfect repose. Without any obstruction - that is the perfection of the unconditioned. Holding no relations with the external world, - that is perfection of the negative state. Without blemish of any kind, - that is the perfection of purity.
Zhuangzi