The archetypes of the collective unconscious discovered by C.G. Jung have traditionally remained the property of analytical psychology and have generally been dismissed by scholars as "mystical." But Jung himself described them as biological entities that, if at all, should lend themselves to empirical investigation. In the work of Bowlby and Lorentz and in the study of the bilateral brain, Anthony Stevens discovered the key to uncovering this long-ignored scientific approach to archetypes as Jung imagined it.