Control the coinage and the courts — let the rabble have the rest.

Beaurocracy destroys initiative.

Deep in the human unconscious is a pervasive need for a logical universe that makes sense. But the real universe is always one step beyond logic.

What are you, child, that you need time to learn about yourself?

There are problems in this universe for which there are no answers. Nothing. Nothing can be done.

Many have marked the speed with which Muad'Dib learned the necessities of Arrakis. The Bene Gesserit, of course, know the basis of this speed. For the others, we can say that Muad'Dib learned rapidly because his first training was in how to learn. And the first lesson of all was the basic trust that he could learn. It is shocking to find how many people do not believe they can learn, and how many more believe learning to be difficult. Muad'Dib knew that every experience carries its lesson.

Historians exercise great power and some of them know it. They recreate the past, changing it to fit their own interpretations. Thus, they change the future as well.