The Soul or Rational Psychology
Emanuel Swedenborg
13:28 h
Emanuel Swedenborg (/ˈswiːdənbɔːrɡ/) born Emanuel Swedberg; 8 February [O.S. 29 January] 1688 – 29 March 1772) was a Swedish pluralistic-Christian theologian, scientist, philosopher and mystic.

The Soul, or Rational Psychology

Emanuel Swedenborg

Translated by Frank Sewall

Part First.
The Senses.
Chapter I. - The Simple Fibre, that it is Celestial in its Nature.

(1.) The successive formation of the blood vessels from the simple fibre,

The simplest fibre is the form of forms, or that which forms the other fibres succeeding in order.

The simplest fibre by its circumflexion forms a certain perpetually spiral surface or membrane which is itself the second, the medullary or nervous fibre of the body, and is simply a little channel constructed from the simplest fibre, but together with the fluid which permeates it, constituting a fibre.

This fibre, therefore, because it descends from the prior, or is the prior fibre thus convoluted, and therefore nothing else than the simple fibre itself, flows by a spiral or perpetually circular flux.

This fibre, when it falls into the provinces of the body, again forms a kind of little gland not unlike the cortical, from which proceeds the bodily fibre, and this forms the little tunic which infolds the arterial vessels.

The fibre further descends into the greater arteries, and there also forms glands which again send out fibres from themselves, and from these is produced the muscular tunic.

Thus the nervous, glandular, tendonous, and muscular tunics, with the membranous, constitute the arteries and veins, all and each being formed of fibres.

Thus the blood vessel is produced from the simple fibre by continuous derivations.

The arterial vessel can accordingly be called the third fibre, the medullary fibre the second, and the simple fibre the first.

In this respect, also, the first fibre may be called the first vessel, then the second vessel, and finally the vessel properly so-called, or the blood vessel.

So with the fluids themselves that flow through them; the first vital essence is the supereminent blood, or that of the supreme degree; that which is of the second fibres is the middle or the purer blood; and that which is of the arteries is the blood properly so-called, or the red blood.

Therefore is the simple fibre the proper animal essence, the form of forms.

(2.) There is nothing else continuous in the whole body; or its whole form is the simple fibre alone.