The Bowl

The "Empty Bowl" metaphor is rooted in the expression of the VOID as described in Chapter 11 of the Tao Te Ching. Its utility is evident in the "Less is More" philosophy of the Great Teachers process.

Thirty spokes join in one hub
In its emptiness, there 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

SOURCE: http://www.taoism.net/ttc/complete.htm