5779. THE SITUATION OF THOSE WHO ARE IN THE LOWER EARTH AND IN THE HEAVENS. Situation there, as regards the form, is incomprehensible. In heaven itself, which is in the lofty parts, the form is entirely heavenly; most perfect in the inmost heaven, and perfect, likewise, in the rest; but all the angelic societies there are arranged according to the form of heaven, and although they appear separate, yet nevertheless they are arranged according to the form; but no one there is able to compass that form. Of what nature it is may be somewhat comprehended from the form of the fibers in the human body, where such forms exist as surpass all understanding: as, for example, in the brain, where all things are arranged in series and bunches, and although those appear like a glutinous something and a snowy mass, still all things flow according to order, and put themselves forth into the nerves in such a manner that not the least thing is lacking, in order that everything of the will may flow distinctly into acts in the body. This may be seen in the cerebrum, the cerebellum, the medulla oblongata and the spinal marrow, in which organs are the cortical substances from which the fibers flow forth for therein are the beginnings of all things in the body.