“Madness in method, that's genius”

“They are not mad. They're trained to believe, not to know. Belief can be manipulated. Only knowledge is dangerous.”

“Chance is the nature of our universe. […] madness represents a chaotic reservoir of surprises. Some surprises can be valuable.”

“Good governance never depends upon laws, but upon the personal qualities of those who govern. The machinery of government is always subordinate to the will of those who administer that machinery. The most important element of government, therefore, is the method of choosing leaders.”

“Abandon certainty! That's life's deepest command. That's what life's all about. We're a probe into the unknown, into the uncertain. Why can't you hear Muad'Dib? If certainty is knowing absolutely an absolute future, then that's only death disguised! Such a future becomes now!”

“Knowing where the trap is—that's the first step in evading it.”

“You don't write for success. That takes part of your attention away from the writing. If you're really doing it, that's all you're doing: writing.”