11

"Thirty spokes share one hub to make a wheel. Through its non-being (wu), There is (yu) the use (yung) of the carriage. Mold clay into a vessel (ch'i). Through its non-being (wu), There is (yu) the use (yung) of the vessel. Cut out doors and windows to make a house. Through its non-being (wu), There is (yu) the use (yung) of the house. Therefore in the being (yu-chih) of a thing, There lies the benefit (li). In the non-being (wu-chih) of a thing, There lies its use (yun)."