The Dune saga ends with Paul gaining the throne. No one knows what happened after that. Herbert spent years improving Dune since no one wanted to publish it. H

The Dune saga ends with Paul gaining the throne. No one knows what happened after that. Herbert spent years improving Dune since no one wanted to publish it. He shined it to a perfect diamond. When Dune was published, it was a good enough success to warrant sequels. Herbert wrote those sequels quickly, and they did not get any polish. They are not diamonds, and no one ought to extract lessons from them.