The best contribution one can make to humanity is to improve oneself.

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.

Show me a completely smooth operation and I'll show you someone who's covering mistakes. Real boats rock.

Law of the Minimum: "The worst potential competition for any organism can come from its own kind. The species consumes necessities. Growth is limited by that necessity which is present in the least amount. The least favourable condition controls the rate of growth."

We can say that Maud'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.

His voice was low, charged with unspeakable adjectives.

Good subjects must feel guilty. The guilt begins as a feeling of failure. The good autocrat provides many opportunities for failure in the populace.