The Four Realms of Existence: A New Theory of Being Human

One of the world's leading experts on mind and brain takes us on an expedition that reveals a new view of what makes us who we are.
Humans have long thought of their bodies and minds as separate spheres of existence. The body is physical—the source of aches and pains. But the mind is mental; it perceives, remembers, believes, feels, and imagines. Although modern science has largely eliminated this mind-body dualism, people still tend to imagine their minds as separate from their physical being. Even in research, the notion of the "self" as somehow distinct from the rest of the organism persists.
Joseph LeDoux argues that we have hit an epistemological wall—that ideas like the self are increasingly barriers to discovery and understanding. He offers a new framework of who we are, theorizing four realms of existence—bodily, neural, cognitive, and conscious.
The biological realm makes life possible. Hence, every living thing exists biologically....