one of the core concepts is that we don't actually see reality.  we all see a world that is filtered through a screen, a screen that is made up of all of our past experiences, what we have learned, our prejudices.  a master reaches a state of "emptiness", where all of that is put aside, and reality comes directly at the master, who just reacts, or not, naturally.  Emptiness is more of a Buddhist concept.

There is probably a much better verse from the Tao, but just opening it to Verse 10:
Can you coax your mind from its wandering
and keep to the original oneness?
Can you let your body become
supple as a newborn child's?
Can you cleanse your inner vision
until you see nothing but the light?
Can you love people and lead them
without imposing your will?
Can you deal with the most vital matters by letting events take their course?
Can you step back from your own mind
and thus understand all things?

Giving birth and nourishing,
having without possessing,
acting with no expectations,
leading and not trying to control;
this is the supreme virtue.

I'm sure others such as rg and Fran would have different insights, and explain much better.

I can't really disagree with your comment now.  I would say that both Christianity (the desert saints, Thomas Merton, and others) and Islam (Sufiism) have a mystic tradition, and there may be some parallels there.  But that tradition doesn't seem to be mainstream in either of the two  religions,,,,,though maybe there is more to learn.  Merton's "New Seeds of Contemplation" is very interesting.  But I would have to admit that to my knowledge, or lack thereof, you make a good point.