Once upon a time a man whose ax was missing suspected his neighbor's son. The boy walked like a thief, looked like a thief and spoke like a thief. But the man found his ax while digging in the valley, and the next time he saw his neighbor's son, the boy walked, looked and spoke like any other child.
Whoever is planted in the Tao will not be rooted up. Whoever embraces the Tao will not slip away. Her name will be held in honor from generation to generation. Let the Tao be present in your life and you will become genuine. Let it be present in your family and your family will flourish. Let it be present in your country and your country will be an example to all countries in the world. Let it be present in the universe and the universe will sing. How do I know this is true? By looking inside myself.
Thirty spokes meet in the hub. Where a wheel isn't is where it's useful. Hollowed out, clay makes a pot. Where the pots not is where it's useful. Cut doors and windows to make a room. Where the room isn't, there's room for you. So the profit in what is, is in the use of what isn't.
. . . These are notions of the mind, which is like a knife, always chipping away at the Tao, trying to render it graspable and manageable. But that which is beyond form is ungraspable, and that which is beyond knowing is unmanageable. There is, however, this consolation: She who lets go of the knife will find the Tao at her fingertips.
Under heaven all can see beauty as beauty only because there is ugliness. All can know good as good only because there is evil. Therefore having and not having arise together. Difficult and easy complement each other. Long and short contrast each other. High and low rest upon each other. Voice and sound harmonize each other. Front and back follow one another.