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 I have even just a little sense, I will walk on the main road and my only fear will be of straying from it. Keeping to the main road is easy, But people love to be sidetracked.

Great talents ripen late; the highest notes are hard to hear.

The greatest revelation is stillness.

Letting the mind control the vital breath is called force.

Clay is fashioned into vessels; it is on their empty hollowness that their use depends. Doors and windows are cut out to make a dwelling, and on the empty space within, its use depends. Thus, while the existence of things may be good, it is the non-existence in them that makes them serviceable.

Those who know when to halt are unharmed.