" Let us, for Jesus’ sake and for all our sakes, at least attempt to clarify how we can have two heads. Our perceived head exists as part (a very small part) of our model of the universe, which exists inside our brain. We have already proven that, have we not? Our brain, however, exists inside our second head — our "real" head, which contains our whole model of the universe, including our perceived head. In short, our perceived head exists inside our perceived universe which exists inside our real head which exists inside the real universe. "

― Robert Anton Wilson , Quantum Psychology: How Brain Software Programs You & Your World