Once we accept 'bodies' as having a soul then we begin to contemplate re-embodiment. We look for evidence, or signs of this. Everyone and anyone should be able to determine the fact that it is naive to think the material has the intelligence - even though we say for instance that metals have a sort of memory etc, but aside from these, what else deepens our understanding enough to look for the soul in the spirit? And that means the material has some kind of specialization that comes from a source that is continuous, and also, as in fertilization, it can impregnate material substance with dynamic force building power. 

By contemplating in this way we add to our knowledge a foundation upon which to build up our ideas so that we eventually can come to perceive the working of creative spirits. So can we come to believe in such a way that we can begin to predict the workings of invisible powers that do in fact also seek to work with special physical substances, shall we say, proteins or other specialized gases. Invisible though they are, they are the source from which 'bodies' come. 

The densest parts of a man come from the water within the body, and so the densest parts of the world have also come from the finer parts. Now we have a consistent pattern that can speak well of re-embodiment. Our bodies, no mater how material they become, It doesn't start from the beginning with materiality, it start in the finer and end again in the spiritual, and so one can ask? How does the coarse and denser material come into being? How are they there? The answer: they are a a bi-product of the activity that has preceded it. And we can call this activity 'Astrality'.

So we have materiality and astrality, the material and active spirit, and between them, holding a balance so to speak is the aetheric.

Now one can ask this question, how do they work together in me and the world? What is my role in all of this?