What is the true concept of life?

When human souls arrive in the world of spirits, the good at once separate from the evil—the good in character towards the good and the evil towards the evil.

In physical life, all are mixed together, but it is not so in the spirit world. When the spirits of the good, the sons and daughters of Light, enter the spirit world, they, first of all, bathe in the impalpable airlike waters of a crystal-clear ocean, and in this, they find an intense and exhilarating refreshment. Within these miraculous waters, they move about as if in the open air, neither are they drowned beneath them, nor do the waters wet them, but wonderfully cleansed and refreshed and fully purified, they enter into the world of glory and light.