t least
the relatively normal intelligence.

Acuteness of perception, memory, logical thought, imagination,
conception, emotional expression or inhibition and the entire content
of consciousness are influenced by the internal secretions. The most
ultramicroscopic activities of the molecules and atoms in the highest
nerve cells and nerve tissues are dominated. The speed of their
chemistry and their associations, and thus the speed of thought, are
regulated. Iodine has been shown to increase the electric conductivity
of the brain that is, the rate at which electrons will fly through it.
The thyroid may then be regarded as manipulating the amount of iodine
brought to play upon the brain cells at a particular moment of danger
or exaltation. Adrenalin increases the electric conductivity of the
brain. Nerve impulses, and with them sensations and ideas, travel
faster or flow more quickly through iodinized or adrenalinized brain
cells. In dangerous situations we think more rapidly and keenly, for
in emergencies the blood floods the brain with extra thyroid and
adrenal secretions.

THE BODY-MIND COMPLEX

Mind, still regarded by most of mankind as something distinct and
apart from the body, is thus exhibited as but part and parcel of it. A
deaf, dumb, and blind animal, deprived of tongue, and olfactory mucous
membrane, without sensations from the outside world can grow no mind,
in the sense of intelligence. The sense organs of the body mediate
the primary mind stuff. Without internal secretions and a vegetative
system there could be no soul, in the sense of complex emotion. Nor
those combinations of thought and emotion which synthesize attitudes,
sentiments and character. The internal secretions and the vegetative
system mediate the primary soul stuff. Mind is thus emulsified with
body as a matter of cold literal fact. The soul was once a subtlety
of metaphysics. Now when mind appears soaked in matter saturated with
chemicals like the hormones, therefore woven out of material threads,
the independent entity created out of intangible spirit flies like a
ghost at dawn.

View the outlook. Mind, the slippery phantom, now becomes controllable
for the purposes of everyday life, because we can put our fingers
upon, touch, handle and change these material factors, the internal
secretions and the vegetative system. Through them we may affect the
very quality of the nerve tissue. The future of the race, the future
of human nature, de