More quotes by Frank Herbert, Dune

"A stone is heavy and the sand is weighty; but a fool's wrath is heavier than them both."
"Scientists seek the lawfulness of events. It is the task of Religion to fit man into this lawfulness."
"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."
"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 have always known."
"There is no escape—we pay for the violence of our ancestors."