Those who wish to embody the Tao 
   should embrace all things.
To embrace all things means first 
   that one holds no anger or resistance 
   toward any idea or thing, 
   living or dead, formed or formless.
To embrace all things means also that one rids oneself
   of any concept of separation; male and female,
   self and others, life and death.
Divison is contrary to the nature of the Tao.
Foregoing antagonism and separation, one enters
   into the harmonious oneness of all things.

attributed to Lao Tzu

in Brian Walker Hua Hu Ching: The Unknown Teachings of Lao Tzu (NY: HarperCollins, 1992,) p. 5

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feature essay – The Doctrine of the “Mysterious Female” in Taoism – by Evgueni A. Tortchinov