Selection from Arcana Coelestia ~ Emanuel Swedenborg
All things in the mind of man have been arranged into series, and as it were into bundles; and into series within series, or into bundles within bundles. That there is such an arrangement, is plain from the arrangement of all things in the body, where fibers are seen arranged into bundles, and glandules into clusters, and this everywhere in the body, and still more perfectly in the purer parts not discernible by the naked eye. This bundling is especially to be seen in the brain, in the two substances there, one of which is called cortical and the other medullary. It is not dissimilar in the purer things, and finally in the purest of all, where the forms which receive them are the very forms of life.
• That forms or substances are recipient of life can be seen from every single thing that appears in living creatures; and also that recipient forms or substances are arranged in the way most suitable for the influx of life. Without the reception of life in substances, which are forms, there would be no living thing in the natural world, nor in the spiritual world. Series of the purest filaments, like bundles, constitute these forms. It is the same with those things therein which are highly modified; for modifications receive their form from the forms which are the substances in which they are, and from which they flow, because the substances or forms are the determining subjects.
• The reason why the learned have regarded the things belonging to man’s life, that is, to his thought and will, as being devoid of recipient substances or forms, has been that they believed life or the soul to be something either flamy or ethereal, thus such as after death would be dissipated; hence comes the insane notion of many, that there is no life after death.
(Arcana Cœlestia 7408)