道可道 ，非常道；名可名，非常名。无，名天地之始；有，名万物之母。故常无，欲以观其妙；常有，欲以观其徼。此两者同出而异名，同谓之玄。玄之又玄，众妙之门。

The way that can be explained is not the Unchanging Way. The name that can be named is not the Unchanging Name. The Void is the name of the beginning of the universe. Existence is the name of the mother of all things. Therefore, it is in the constant Void that we must look for the wonders of the universe, for in the constant Existence we can find only its limits. Both these aspects are different but can be called Profound. But they are more Profound than the Profound. And therein lies the