Is not the space between Heaven and Earth like a bellows? It is empty, but lacks nothing. The more it moves, the more comes out of it.
LaoziThe mark of a moderate man is freedom from his own ideas. Tolerant like the sky, all-pervading like sunlight, firm like a mountain, supple like a tree in the wind, he has no destination in view and makes use of anything life happens to bring his way.
Laozi