All right, another Herbert fan!
Actually, I'm not sure if he said it in the books at all, I'll have to check. I took that from that scene from the David Lynch film that I use as my signature image.
I got introduced to Dune from the film when I was a kid. Then I went and read the books. As such, the film never disappointed me as it did for other hard core fans. So I'm probably the only Dune fan that likes both the films and the books.