"This is the awe-inspiring universe of magic: There are no atoms, only waves and motions all around. Here, you discard all belief in barriers to understanding. You put aside understanding itself. This universe cannot be seen, cannot be heard, cannot be detected in any way by fixed perceptions. It is the ultimate void where no preordained screens occur upon which forms may be projected. You have only one awareness here - the screen of the magi: Imagination! Here, you learn what it is to be human. You are a creator of order, of beautiful shapes and systems, an organizer of chaos." - The Atreides Manifesto, Bene Gesserit Archives
This is yet another example of the profundity of Frank Herbert. Especially in light of what string theory is positing, his description of the universe being "only waves and motions", is spot on. I also like his description of a malleable consensual reality, it fits into my current model that I'm developing and also jives with some 'scientific' thinking.
Looking through a list of quotes @ http://curator.hotbox.ru/dune.html
shows quite a few more gems from this author.