“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.”

American science-fiction author

Frank Herbert was an American science-fiction author. He is best known for the 1965 novel Dune and its five sequels. He also wrote short stories and worked in several other roles, including newspaper journalist, photographer, book reviewer, ecological consultant, and lecturer. His reputation rests above all on Dune and the wider series that followed it.