Since we’re talking about Taoism (see post below), how about this op-ed in today’s NYT by Margaret Wertheim.  She discusses what shadows, immaterial presences that do not require energy to move, might mean for modern physics:

ON Thursday, on the summer solstice, the Sun will celebrate the
year’s lazy months by resting on the horizon. The word solstice derives
from the Latin “sol” (sun) and “sistere” (to stand still). The day
marks the sun’s highest point in the sky, the moment when our shadows
shrink to their shortest length of the year. How strange to think that
these mundane friends, our ever-present familiars, can actually go
faster than the sun’s rays.

I remarked on this recently to my
husband as we sat on the porch with our shadows pooling by our chairs.
Nothing can go faster than light, he insisted, expressing what is
surely the most widely known law of physics, ingrained into us by a
thousand “Nova” programs.

That is the point, I explained: Nothing
can go faster than light. A shadow isn’t a thing. It’s a non-thing.
It’s the absence of light.

Special relativity dictates that we
cannot move anything more quickly than the particles of light known as
photons, but no law says you can’t do nothing faster than light. Physicists have known this for a long time, even if they generally do not mention it on PBS documentaries.

 Brilliant!  Not only does this give us a new insight into "doing nothing," but it also helps illustrate the fusion of being and non-being.   Thing only makes sense in relation to no-thing; material is tangible only because of immateriality.  You get it…