Spirit is the energy of life that descends through the different energetic levels into the densest point, which is matter. The interrelation of spirit and matter creates the consciousness that we call soul. It is through the duality of physical existence and the choices we make that we develop consciousness.
Every individual soul emanates from the Oversoul that encompasses all human consciousness. The soul is the everlasting part of our self, the part that develops and evolves through many lifetimes. To perfect this development, the soul chooses the particular conditions and circumstances necessary for the incarnating personality. We all emanate from the same source and race is only a choice made by the soul for a particular incarnation. The physical body and the circumstances of each lifetime are temporary. As our essential being is immortal, we are really the soul and not just our physical body.