“Emptiness gives function to form
“Thirty spokes join in one hub
in its emptiness is the function of a vehicle
Mix clay to create a container
In its emptiness there is the function of a container
Cut open doors and windows to create a room
In its emptiness, there is the function of a room
Therefore, that which exists is used to create benefit
That which is empty is used to create functionality
Chapter 11 Tao Te Ching