The Wisdom of Taoism

TAO is the "x" or unknown quantity that we have to find.

And the first thing to be done is to see what is predicated of this mysterious Thing; how it is described; with what attributes it is credited; where it is to be found; whence it sprang, how it exists, and what its functions are. Then we may find ourselves in a position to discover what it is that answers to these particulars, and profanely to give a name to that which its preachers themselves declared must be for ever nameless.