Leto is suspicious of the Emperor but weighs the risks against the power of controlling Arrakis and making an alliance with its mysterious natives, the Fremen. Leto’s concubine, Lady Jessica, is an acolyte of the Bene Gesserit—an exclusive sisterhood whose members possess advanced physical and mental abilities. As part of a centuries-long breeding program, they instructed her to bear a daughter whose son would become the Kwisatz Haderach—a Bene Gesserit and messianic superbeing with the prescience necessary to guide humanity to a better future. Jessica disobeyed and bore a son, Paul, who is trained by Leto’s aides, Duncan Idaho, Gurney Halleck, the Suk doctor Wellington Yueh, and the Mentat Thufir Hawat, and by Jessica in Bene Gesserit disciplines.