njured in the womb or by a wound or by
disease, or by excessive application, thought is weakened and sometimes
the mind becomes deranged.

(5) In that all the external senses of the body sight, hearing, smell, and
taste, with touch (the universal sense) as also speech, are in the front
part of the head, which is called the face, and communicate immediately
through fibers with the brains, and derive therefrom their sensitive and
active life.

(6) It is from this that affections, which are of love, appear imaged
forth in the face, and that thoughts, which are of wisdom, are revealed
in a kind of sparkle of the eyes.

(7) Anatomy teaches that all fibers descend from the brains through the
neck into the body, and that none ascend from the body through the neck
into the brains. And where the fibers are in their first principles or
firsts, there life is in its first principles or firsts. Will any one
venture to deny that life has its origin where the fibers have their
origin?

(8) Ask any one of common perception where his thought resides or where
he thinks, and he will say, In the head. Then appeal to some one who has
assigned the seat of the soul to some gland or to the heart or somewhere
else, and ask him where affection and thought therefrom are in their
firsts, whether they are not in the brain? and he will answer, No, or
that he does not know. The cause of this ignorance may be seen above
(n. 361).

366. (3) Such as life is in its first principles, such it is in the whole
and in every part. That this may be perceived, it shall now be told where
in the brains these first principles are, and how they become derivative.
Anatomy shows where in the brains these first principles are; it teaches
that there are two brains; that these are continued from the head into
the spinal column; that they consist of two substances, called cortical
substance and medullary substance; that cortical substance consists of
innumerable gland-like forms, and medullary substance of innumerable
fiber-like forms. Now as these little glands are heads of fibrils, they
are also their first principles. For from these, fibers begin and
thereupon go forth, gradually bundling themselves into nerves. These
bundles or nerves, when formed, descend to the organs of sense in the
face, and to the organs of motion in the body, and form them. Consult
any one skilled in the science of anatomy, and you will be convinced.
This cortical or glandular substance co