Totally forgot about the fear one. I used to come back to that one a lot. Petty irritations, though - I actually saw the Dune miniseries before I read the book, where they trimmed that quote down by about half: "I will not fear. Fear is the mind-killer. I will face my fear, I will let it pass through me. Where the fear has gone, there will be nothing. Only I will remain." So it got stuck in my head that way, flow-wise, to where the actual thing seemed wordy when I read it. Sigh.

It does make me think about different forms of media, though, and the impact of hearing a quote versus reading it. I don't think one is blanketly more powerful than the other, but for any given quote and a person's relationship to it, I have a feeling that one format or the other ends up winning out.