Chapter 6 The completion of material forms

谷神不死,是謂玄牝。玄牝之門,是謂天地根。綿綿若存,用之不勤。

The valley spirit dies not, aye the same;
The female mystery thus do we name.
Its gate, from which at first they issued forth,
Is called the root from which grew heaven and earth.
Long and unbroken does its power remain,
Used gently, and without the touch of pain.

Derek Lin
The valley spirit, undying
Is called the Mystic Female

The gate of the Mystic Female
Is called the root of Heaven and Earth

It flows continuously, barely perceptible
Utilize it; it is never exhausted

Peter Merel

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.