We Join Together Spokes in a Wheel
We join spokes together in a wheel,
but it’s the vacant hub
that makes it possible
for the cart to move.
We shape a pot to make a void
to hold whatever we want.
We stand up walls to make a house,
but the hollow within
is where living takes place.
Non-being is at the heart of being.
from the Tao The Ching of Lao Tzu, V. 11