If all men in the world know what is fair, then it is unfair. 
         天下皆知美之为美，斯恶矣。

    If all men know what is good, then it is not good. 
         皆知善之为善，斯不善已。

    For "to be" and "not to be " co-exist, there cannot be one without the other.
         故有无相生。

    Without "difficult", there cannot be "easy".
         难易相成。

    Without "long", there cannot be "short".
         长短相形。

    Without "high", there cannot be "low".
         高下相倾。

    Without sound, there can be no voice.
         音声相和。

    Without "before", there cannot be "after"
         前后相随。

    The contrary complements each other. 
         对立的事物是相互补足的。

    Therefore the sage does everything without interference,teaches everyone without persuasion,and lets everything begin uninitiated grow unpossessed.
         是以圣人处无为之事，行不言之教。万物作焉而不辞。生而不有，为而不恃。

    Everything is done without being his deed,and succeeds without being his success.
         功成而弗居。

    Only when success belong to nobody does it belong to everyone.
         夫唯弗居，是以不去。

    The devine law may be spoken of, but it is not the common law. 
         道，可道，非，常道。

    Things may be named,but names are not the things. 
         名，可名，非，常名。

    In the beginning heaven and earth are nameless;when named,all things become known.
         无名，天地之始，有名，有名万物之母。

    So we should be free from desires in order to understand the internal mystery of the devine law;and we should have desires in order to observe its external manifestations.
         故常无欲以观其妙,常有欲以观其徼。

    Internal mystery and external manifestations come from the same origin,but have different names.
         此两者同出而异名。

    They may be called essence.
         同谓之玄。

    The essential of the essence it the key to the understanding of all mysteries.
         玄之又玄，众妙之门。