The best fighter is never angry.
The world's beginning is its mother. To have found the mother is also to know the children. Although you know the children, cling to the mother. Until your last day you will not be harmed.
The real is empty and the empty real
The superior leader keeps informed about everything but interferes hardly at all.
When men lack a sense of awe, there will be disaster.
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.