The Bene Gesserit is a secretive sisterhood in the science fiction universe of Dune, created by author Frank Herbert. They possess advanced mental and physical abilities, allowing them to manipulate others and influence political events. Their training includes disciplines like the Voice, which enables them to control people through speech. The primary goal of the Bene Gesserit is to guide humanity's evolution through selective breeding. They seek to produce the Kwisatz Haderach, a prophesied superbeing with extraordinary powers. Their influence extends across the galaxy, as they often serve as advisors and strategists in the complex political landscape of the Dune universe.