Like justness in a judge's decision, or beauty in a painting, soul is a quality of absoluteness in something relative. Understood profoundly, people are connected to the holiness of the world in such a way that they reveal a dimension of holiness in themselves, a dimension of depth that is absolute.
There is a place in everyone that can carry the light. God has made it this way. God has not only given us the chance to carry the light, but has made it possible for us to kindle and strengthen the light in one another, passing the light along. This way God's light will shine forever in this world.