You Bene Gesserit call your activity of the Panoplia Prophetica a "Science of
Religion." Very well. I, a seeker after another kind of scientist, find this an
appropriate definition. You do, indeed, build your own myths, but so do all
societies. You I must warn, however. You are behaving as so many other
misguided scientists have behaved. Your actions reveal that you wish to take
something out of [away from] life. It is time you were reminded of that which
you so often profess: One cannot have a single thing without its opposite.

-The Preacher at Arrakeen: A Message to the Sisterhood