The Tao that can be told is not the eternal Tao.
The name that can be named is not the eternal name.
The nameless is the beginning of heaven and earth.
The named is the mother of ten thousand things.
Ever desireless, one can see the mystery.
Ever desiring, one can see the manifestations.
These two spring from the same source but differ in name;
this appears as darkness.
Darkness within darkness.
The gate to all mystery.

If you want to become whole, let yourself be partial. If you want to become straight, let yourself be crooked. If you want to become full, let yourself be empty. If you want to be reborn, let yourself die. If you want to be given everything, give everything up.