Tao Te Ching 6 (thing)

The valley spirit never dies;
It is the woman, primal mother.
Her gateway is the root of heaven and earth.
It is like a veil barely seen.
Use it; it will never fail.

What is complete

The valley spirit never dies.
Call it the mystery, the woman.

The mystery,
the Door of the Woman,
is the root
of earth and heaven.

Forever this endures, forever.
And all its uses are easy.

6. Experience

Experience is a riverbed,
Its source hidden, forever flowing:
Its entrance, the root of the world,
The Way moves within it:
Draw upon it; it will not run dry.