道是上天、命运和万物之母；我不知她的名字，所以只好称她为道；看她看不着，听她听不见，摸她摸不了，所以道无法被描述；道的法则：天下万物是一次从无至有再至无的循环。DAO is the MOTHER of all. SHE is FORTUNE; SHE is PROVIDENCE. I do not know HER name, so I have to name HER as DAO; SHE is invisible, inaudible, and intangible, so I can not describe HER. DAO's law: all is one cycle from not-being to being and to not-being again.