The Tao is always at ease. It overcomes without competing, answers without speaking a word, arrives without being summoned, accomplishes without a plan. Its net covers the whole universe. And though its meshes are wide, it doesn't let a thing slip through.
What is a good man but a bad man's teacher? What is a bad man but a good man's job? If you do not remember this, You will get lost, No matter how intelligent you are. It is the great secret.
The ten thousand things flourish and then each returns to the root from which it came. Returning to the root is stillness. Through stillness each fulfils its destiny.
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.