Oh I think it's a combination of brain and body, that's the
thing. I don't think we *can* _really_ separate the two, not
distinctly.
The body influences the brain which influences the body which
influences the brain which influences the body which influences
the brain which influences the body... etc.
You could stick the brain in front and I stick the body in
front, but to me, it amounts to more or less the same idea. By
the time we're old enough to be on trial for killing someone,
the two are entirely intertwined imho.