Thirty spokes meet in the hub,
but the empty space between them
is the essence of the wheel.
Pots are formed from clay,
but the empty space within it
is the essence of the pot.
Walls with windows and doors
form the house,
but the empty space within it
is the essence of the home.
To produce things and to rear them,
To produce, but not to take possession of them,
To act, but not to rely on one's own ability,
To lead them, but not to master them -
This is called profound and secret virtue.
All things issue from it; all things return to it. To find the origin, trace back the manifestations. When you recognize the children and find the mother, you will be free of sorrow. If you close your mind in judgements and traffic with desires, your heart will be troubled. If you keep your mind from judging and aren't led by the senses, your heart will find peace. Seeing into darkness is clarity. Knowing how to yield is strength. Use your own light and return to the source of light. This is called practicing eternity.
The very highest is barely known.
Then comes that which people know and love,
Then that which is feared,
Then that which is despised.
Who does not trust enough will not be trusted.