谷神不死，是谓玄牝。
The Valley Spirit never dies. #2 It is named the Mysterious Female.
玄牝之门，是谓天地根。
And the doorway of the Mysterious Female is the base from which Heaven and Earth sprang.
绵绵若存，用之不勤。
It is there within us all the while; draw upon it as you will, it never runs dry.