A creature who has spent his life creating one particular representation of his selfdom will die rather than become the antithesis of that representation

Think on it, Chani: the princess will have the name, yet she'll live as less than a concubine - never to know a moment of tenderness from the man to whom she's bound. While we, Chani, we who carry the name of concubine - history will call us wives.

Leto turned a hard stare at Kynes. And Kynes, returning the stare, found himself troubled by a fact he had observed here: This Duke was concerned more over the men than he was over the spice. He risked his own life, and that of his son to save the men. He passed off the loss of a spice crawler with a gesture. The threat to men's lives had him in a rage. A leader such as that would command fanatic loyalty. He would be difficult to defeat. Against his own will and all previous judgements, Kynes admitted to himself: I like this Duke.

The purpose of argument is to change the nature of truth.

Ready comprehension is often a knee-jerk response and the most dangerous form of understanding. It blinks an opaque screen over your ability to learn. The judgmental precedents of law function that way, littering your path with dead ends. Be warned. Understand nothing. All comprehension is temporary.

There has never been a truly selfless rebel, just hypocrites—conscious hypocrites or unconscious hypocrites, it’s all the same.

When I was writing Dune there was no room in my mind for concerns about the book's success or failure. I was concerned only with the writing. Six years of research had preceded the day I sat down to put the story together, and the interweaving of the many plot layers I had planned required a degree of concentration I had never before experienced.