Kwisatz Haderach, also known as the "God child" to the Bene Gesserit, is a fictional character in the Dune universe, created by Frank Herbert.
They hoped to create a male Reverend Mother capable of perfect reliability and predicialblity that they could control. They did finally create the god child in Paul Atreides but didn't realize it until he made plans of his own for the universe.
The phrase Kwisatz Haderach קפיצת הדרך originally came from Hebrew and means "Jump ahead of the path", i.e. a grandiose breakthrough.