Clay is fashioned into vessels; it is on their empty hollowness that their use depends. Doors and windows are cut out to make a dwelling, and on the empty space within, its use depends. Thus, while the existence of things may be good, it is the non-existence in them that makes them serviceable.
LaoziWhy separate your spiritual life and your practical life? To an integral being, there is no such distinction.
LaoziIf people do not revere the Law of Nature It will adversely affect them. If they accept It with knowledge and reverence, It will accommodate them with balance and harmony.
Laozi