In all these cases, and scores of others which we cannot consider now, the same action is taking place—by which invisible psychic and spiritual forces, for good or evil, are ever pressing forward into the manifest, and condensing themselves into visible and even tangible forms, or taking possession of existing forms for the purpose of expression and manifestation. And here we have (as I think will be seen one day) the whole rationale of Creation—we have the conception which brings into line the phenomena of the visible and material world and their genesis, with the genesis of thoughts in our own minds, and _their_ passage into visibility and expression; we have the conception which unites the mental and material, and which makes the whole Creation luminous with meaning. Especially is this obvious to-day, when the theory of electrons is introducing us to a world as far finer and subtler than the atom, as the atom is finer and subtler than the tangible world of our experience; and is suggesting that these finest states of matter are of the nature of electrical charges, which, again, are quite analogous to mental states.[104] Thus we have, almost forced upon us as the key to the creation of visible forms, the conception, of a process of condensation by which the most subtle thought and emotion does in course of time (brief or lengthy) tend to manifest itself in material shape, and may ultimately take on the most persistent and quasi-indestructible forms. * * * * * Reverting, then, to the subject of last chapter, we see that a ‘spiritual’ body—that is, a material body of a texture so fine and so swiftly plastic as to be the analogue of thought—is a conception quite in line with the conclusions of modern science; and that granted the existence of such a thing, it is quite in line also to conclude that it would tend toward condensation and manifestation in grosser and more visible form. I gave in that chapter some general outline of how such condensation might take place. I now propose to consider this process more in detail, and to give some evidence as to its actually taking place.