We join spokes together in a wheel, but it is the center hole that makes the wagon move. We shape clay into a pot, but it is the emptiness inside that holds whatever we want. We hammer wood for a house, but it is the inner space that makes it livable. We work with being, but non-being is what we use.
LaoziForce is followed by loss of strength. This is not the way of the Tao. That which goes against the Tao comes to an early end.
Laozi