Clay is molded to form a cup, But it is on its non-being that the utility of the cup depends. Doors and windows are cut out to make a room, But it is on its non-being that the utility of the room depends. Therefore turn being into advantage, and turn non-being into utility.
Why is the tao so valuable? Because it is everywhere, and everyone can use it. This is why those who seek will find, And those who reform will be forgiven; Why the good will be rewarded, And the thief who is cunning will escape.