The Reverend Mother Gaius Helen Mohiam's visit to Caladan at the beginning of Dune teases both the Kwisatz Haderach and the Bene Gesserit breeding scheme. Gaius Helen Mohiam is at Caladan out of an absolute sense of duty towards the Bene Gesserit, and not in the capacity of Emperor Shaddam's Truthsayer. She stands at the door of Lady Jessica and Duke Leto Atreides' son, the fifteen-year-old Paul. The Reverend Mother gazes intently at him, and says to Jessica: