... three parts, the ego (the rational, cognitive part), the id (the irrational, emotional part), and the superego 2 THE GRAVITY OF WEIGHTas a disease has many advantages and benefits, including garnering ... the cells of the brain. And to make matters more complicated, we know the brain is part of the body. It is this intricate system of mind and brain and body, that is, this system of neural and ... the brain, of course, and not a separate anatomical struc-ture. We have ideas about what parts of the brain contribute to our notion of mind, but we have yet to identify exactly what we mean by...