Law is the ultimate science.

It is impossible to live in the past, difficult to live in the present and a waste to live in the future.

Scientists seek the lawfulness of events. It is the task of Religion to fit man into this lawfulness.

Killing with the point lacks artistry, but don't let that hold your hand when the opening presents itself.

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.

Something cannot emerge from nothing.

There's an unwritten compact between you and the reader. If someone enters a bookstore and sets down hard earned money (energy) for your book, you owe that person some entertainment and as much more as you can give.