http://www.human.toyogakuen-u.ac.jp/~acmuller/contao/laotzu.htm

The valley spirit never dies.
It is called "the mysterious female."
The opening of the mysterious female
Is called "the root of Heaven and Earth."
Continuous, seeming to remain.
Use it without exertion.

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.

Like a riverbed, the heart is never filled
It is an ineffable female
Whose entrance is the source of the World;
Tao is ever present within it:
Draw upon it and it will never fail.

The valley spirit not dying
is called the mysterious female
The opening of the mysterious female
is called the root of heaven and earth.
Continuous, on the brink of existence,
to put it into practice, don't try to force it.

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.