Dualistic Tao Principle

A nice Tao quote I came across, not sure to what extent this applies:

" Thirty spokes join together in a single wheel,
but it is the center hole that makes the wagon move.
We shape a lump of clay into a vessel,
but it is the emptiness inside the vessel that makes it useful.
We hammer doors and windows of wood for a house,
but it is the empty inner space that makes the rooms livable.
We build with the tangible, but the intangible is what we use."


Venkat Reddy