Book - Tao Te Ching - Lao Tzu
Stephen Mitchell Translation
The Tao is called the Great Mother:
empty yet inexhaustible,
it gives birth to infinite worlds.
It is always present within you.
You can use it any way you want. - Stephen Mitchell
Other translations I like
The valley spirit, undying
Is called the Mystic Female1
The gateway of the Mystic Female
is called the root of Heaven and Earth2
It flows continuously, barely perceptible
When utilized, it is never exhausted -