The valley spirit does not die.
She is called the Mysterious Female.
Her gate is called the Connection
between Heaven and Earth.
Like down, or cotton—soft, soft—
yet strong and lasting as silken floss
Spinning, spinning, thin and long,
she continues on and on.
Use her power, and your work
Will not be hard.
— Tao Te Ching, chapter 6
(translation: Benjamin Hoff)