The mind is a fascinating entity. Where, after all, would we be without it? But what exactly is it? These days many people believe the mind simply is the brain. Descartes would have disagreed profoundly. He recommended a dualism of substance. Modern philosophers are again finding various forms of dualism attractive because the problems with physicalism are so intractable. One such problem is whether the mind, like the brain, is located in space (specifically inside the head). But does philos ...