Usefullness...
"Thirty spokes will converge in the hub of a wheel; But the use of the cart will depend on the part of the hub that is void.
With a wall all around a clay bowl is moulded; but the use of the bowl will depend on the part of the bowl that is void.
Cut out windows and doors in the house as you build; but the use of the house will depend on the space in the walls that is void.
So advantage is had from whatever is there; but usefullness arises from whatever is not."
The Tao Te Ching, as presented in Miyamoto Musashi's Book of Emptiness chapter, in The Book of Five Rings.
I have not written in quite a while, as I was being useful.
For now, suffice it to say that I can find no simple words, only complex ones. And this is a sign that my thoughts are not complete, for the essence of a thing is important. So I seek to understand the void, and tell a simple tale.
Mustang