This is a doozy. The link takes you directly to the quantum mechanics page and and once you take a deep breath and dive in, you'll be entranced. But don't forget to click on the page links on the left. The site is enormous and enormously interesting with large sections on Truth, Reality, Metaphysics and more.
John Archibald Wheeler
Wheeler was one of the great theoretical physicists of the last century. In this
passage from "The End of Science" by John Horgan, Wheeler talks about how reality comes to be defined by the questions we ask about it. You can read more about Wheeler
here.
From the author of "The Holographic Universe, an essay by on quantum physics, David Bohm, Karl Pribram and holograms. This is hard science, but an easy read.