Thirty spokes share one hub. Adapt the nothing therein to the purpose in hand, and you will have the use of the cart. Knead clay in order to make a vessel. Adapt the nothing therein to the purpose in hand, and you will have the use of the vessel. Cut out a door and windows in order to make a room. Adapt the nothing therein to the purpose in hand, and you will have the use of the room. Thus, what we gain is Something, yet it is by virtue of Nothing that this can be put to use.