Intelligence takes chances with limited data in an arena where mistakes are not only possible but also necessary.

Every civilization must contend with an unconscious force which can block, betray, or countermand almost any conscious intention of the collectivity.

The beginning of knowledge is the discovery of something we do not understand.

Major flaw in government arise from a fear of making radical internal changes even though a need is clearly seen.

The Fremen were supreme in that quality the ancients called "spannungsbogen" -- which is the self-imposed delay between desire for a thing and the act of reaching out to grasp that thing.

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.

Often I must speak otherwise than I think. This is called diplomacy.