Vitae philosophorum

All things live which partake of heat—this is why plants are living things —but all have not soul, which is a detached part of aether, partly the hot and partly the cold, for it partakes of cold aether too. Soul is distinct from life; it is immortal, since that from which it is detached is immortal. Living creatures are reproduced from one another by germination; there is no such thing as spontaneous generation from earth. The germ is a clot of brain containing hot vapour within it; and this, when brought to the womb, throws out, from the brain, ichor, fluid and blood, whence are formed flesh, sinews, bones, hairs, and the whole of the body, while soul and sense come from the vapour within.

First congealing in about forty days, it receives form and, according to the ratios of harmony, in seven, nine, or at the most ten, months, the mature child is brought forth. It has in it all the relations constituting life, and these, forming a continuous series, keep it together according to the ratios of harmony, each appearing at regulated intervals. Sense generally, and sight in particular, is a certain unusually hot vapour. This is why it is said to see through air and water, because the hot aether is resisted by the cold; for, if the vapour in the eyes had been cold, it would have been dissipated on meeting the air, its like. As it is, in certain [lines] he calls the eyes the portals of

The soul of man, he says, is divided into three parts, intelligence, reason, and passion. Intelligence and passion are possessed by other animals as well, but reason by man alone. The seat of the soul extends from the heart to the brain; the part of it which is in the heart is passion, while the parts located in the brain are reason and intelligence. The senses are distillations from these. Reason is immortal, all else mortal. The soul draws nourishment from the blood; the faculties[*](The word λόγους is translated above by ratios, i.e. proportionalities. With ἀνέμους compare the Stoic air-currents.) of the soul are winds, for they as well as the soul are invisible, just as the aether is invisible.

The veins, arteries, and sinews are the bonds of the soul. But when it is strong and settled down into itself, reasonings and deeds become its bonds. When cast out upon the earth, it wanders in the air like the body. Hermes is the steward of souls, and for that reason is called Hermes the Escorter, Hermes the Keeper of the Gate, and Hermes of the Underworld, since it is he who brings in the souls from their bodies both by land and sea; and the pure are taken into the uppermost region, but the impure are not permitted to approach the pure or each other, but are bound by the Furies in bonds unbreakable.

The whole air is full of souls which are called genii[*](The Greek daemons (δαίμονες) are, according to Hesiod, W. and D. 121-126, superhuman beings, guardians and benefactors of mankind, watching over the earth whereon once they lived.) or heroes; these are they who send men dreams and signs of future disease and health, and not to men alone, but to