Frank Herbert

Parting with friends is a sadness. A place is only a place.

Polish comes from the cities; wisdom from the desert.

A stone is heavy and the sand is weighty; but a fools wrath is heavier than them both.

The highest function of ecology is understanding consequences.

To attempt an understanding of Muad'Dib without understanding his mortal enemies, the Harkonnens, is to attempt seeing Truth without knowing Falsehood. It is the attempt to see the Light without knowing Darkness. It cannot be.

You cannot go on forever stealing what you need without regard for those who come after. The physical qualities of a planet are written into its economic and political record. We have the record in front of us and our course is clear.

Arrakis teaches the attitude of the knife — chopping off what's incomplete and saying: "Now it’s complete because it’s ended here."

A beginning is the time for taking the most delicate care that the balances are correct. This every sister of the Bene Gesserit knows. To begin your study of the life of Muad'Dib, then take care that you first place him in his time: born in the 57th year of the Padishah Emperor, Shaddam IV. And take the most special care that you locate Muad'Dib in his place: the planet Arrakis. Do not be deceived by the fact that he was born on Caladan and lived his first fifteen years there. Arrakis, the planet known as Dune, is forever his place.