Clay is moulded to make a vessel, but the utility of the vessel lies in the space where there is nothing. . . . Thus, taking advantage of what is, we recognize the utility of what is not.
The sage does not hoard. The more he helps others, the more he benefits himself, The more he gives to others, the more he gets himself. The Way of Heaven does one good but never does one harm. The Way of the sage is to act but not to compete.
If the Great Way perishes there will morality and duty. When cleverness and knowledge arise great lies will flourish. When relatives fall out with one another there will be filial duty and love. When states are in confusion there will be faithful servants.