You have seen so much of the outer world and had so many experiences of people, places, and things—and of course those experiences will keep coming. But now, in the second half of your life, as the outer world seems more unstable and dangerous than ever, we want you to take the same rapacious curiosity that once thrust you all over the planet with a hungry, fascinated appetite, and we want you to turn it inward.
This is essentially the argument for the soul: it holds reality together, it is my offscreen director, my presiding intelligence. I can think, talk, work, love, and dream, all because of the soul, yet the soul doesn't do any of these things. It is me... Everything that makes the difference between life and death must cross into this world via the soul... Soul is a connection between the world of the five senses and a world of inconceivable things like eternity, infinity, omniscience, grace, and every other quality unmanifest.