“For now is my grief heavier than the sands of the seas, she thought. This world has emptied me of all but the oldest purpose: tomorrow's life.”

“A stone is heavy and the sand is weighty; but a fool's wrath is heavier than them both.”

“Empires do not suffer emptiness of purpose at the time of their creation. It is when they have become established that aims are lost and replaced by vague ritual. -Words of Muad'dib by Princess Irulan.”

“The waters which we spread upon the desert have become blood. Blood upon our land! Behold our desert which could rejoice and blossom; it has lured the stranger and seduced him in our midst. They come for violence! Their faces are closed up as for the last wind of Kralizec! They gather the captivity of the sand. They suck up the abundance of the sand, the treasure hidden in the depths. Behold them as they go forth to their evil work. It is written: 'And I stood upon the sand, and I saw a beast rise up out of that sand, and upon the head of that beast was the name of God!”

“Much that was called religion has carried an unconscious attitude of hostility toward life. True religion must teach that life is filled with joys pleasing to the eye of God, that knowledge without action is empty. All men must see that the teaching of religion by rules and rote is largely a hoax. The proper teaching is recognized with ease. You can know it without fail because it awakens within you that sensation which tells you this is something you’ve always known.”

“It has occurred to me more than once that holy boredom is good and sufficient reason for the invention of free will.”

“Whether a thought is spoken or not it is a real thing and it has power," Tuek said. "You might find the line between life and death among the Fremen to be too sharp and quick.”