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"The Tao that can be spoken of is not the eternal Tao; The Name that can be named is not the eternal Name.* The Nameless [non-being] is the origin of heaven and earth; The Namable [being] is the mother of all things.** Therefore constantly without desire, There is the recognition of subtlety;*3* But constantly with desire, Only the realization of potentiality.*4* The two come from the same source, Having different names. Both are called mysteries, More mystical than the most mystical, The gate of all subtleties.*5*"