Pythagoras was a Greek mathematician and philosopher (570-495 BC). He founded Pythagoreanism, a secret society based on philosophical religion. His followers survived in Italy for nearly two hundred years. They were the first to study regular solids
Bene Gesserit is a secretive sisterhood training women for magical abilities. Founded during Butlerian Jihad, later headquartered at Chapterhouse. Members train from childhood to become Reverend Mothers