Technology tends toward avoidance of risks by investors. Uncertainty is ruled out if possible. People generally prefer the predictable. Few recognize how destructive this can be, how it imposes severe limits on variability and thus makes whole populations fatally vulnerable to the shocking ways our universe can throw the dice.

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.

Politics: the art of appearing candid and completely open while concealing as much as possible.

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.

The thing the ecologically illiterate don't realize about an ecosystem is that it's a system. A system! A system maintains a certain fluid stability that can be destroyed by a misstep in just one niche.

A person cries out in life because it's lonely and because life's been broken off from whatever created it. But no matter how much you hate life, you love it too. It's like a caldron boiling with everything you have to have, but very painful to the lips.

The basic lesson of our relativistic universe is that things change. Any power must always meet a greater power.