I have read the Dune series and the movies (yes the old one and the recent remake)doesn't copare to the books the books are much better. The same thing with Battlefield Earth great book but 1000 pages long. They butchered it to put it into a movie.
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All blades cut, be they made from metal or wood, but the sharpest and deadliest blade is the one of knowledge.
An Archmage of the HADB