 A Way that can be followed is not a constant Way.  A name that can be named is not a constant Way.  Nameless, it is the beginning of Heaven and earth.  Named, it is the mother of the myriad creatures.  And so,  Always eliminate desires in order to observe its [Way’s] mysteries;  Always have desires in order to observe its [Way’s] manifestations.  (Laozi, 1; Ivanhoe 2002: 1).