That which cannot be seen is called invisible.
That which cannot be heard is called inaudible.
That which cannot be held is called intangible.
These three cannot be defined;
therefore, they are merged as one.
Each of these three is subtle for description.
By intuition you can see it,
and feel it.
Then the unseen,
are present as one.
Its rising brings no dawn,
its setting no darkness;
it goes on and on, unnameable,
returning into nothingness.
Approach it and there is no beginning;
follow it and there is no end.
You cannot know it, but you can be it,
at ease in your own life.
Discovering how things have always been
brings one into harmony with the Way.
-Tao Te Ching
as channeled by Wayne Dyer