Pearls passed on

A candle loses none of its light by lighting another candle. ~Unknown

Eleven – From Tao Te Ching

Thirty spikes share the wheel’s hub;
It is the center hole that makes it useful
Shape clay into a vessel
It is the space within that makes it useful
Cut doors and windows for a room;
It is the holes which make it useful
Therefore profit comes from what is there;
Usefulness from what is not there.