CHALLENGE: "Have you seen The Preacher?" RESPONSE: "I have seen a sandworm." CHALLENGE: "What about that sandworm?" RESPONSE: "It gives us the air we breathe." CHALLENGE: "Then why do we destroy its land?" RESPONSE: "Because Shai-Hulud [sandworm deified] orders it."
Attributed to: Harq al-Ada
From Chapter 02 of Children of Dune by Herbert, Frank