Again we shall go to the ancients, as reported by Montaigne, for ideas.
He tells us first what the soul was said to be
We start by denialists; Crates and Dicearchus were of opinion that there was no soul at all.
Plato that it was a substance moving of itself
Thales a nature without repose
Aedepiades an exercising of the senses
Hesiod and Anaximander a thing composed of earth and water
Parmenides of earth and fire
Empedocles of blood
Posidonius, Cleanthes and Galen that it was heat or a hot complexion
Hippocrates a spirit diffused all over the body
Varro that it was an air received at the mouth, heated in the lungs, moistened in the heart and diffused throughout the whole body
Zeno the quintessence of the four elements
Heraclides Ponticus that it was the light
Zenocrates and the Egyptians a mobile number
The Chaldeans a virtue without any determinate form
Aristotle that which causes the body to move
and now where it’s seat is
Hippocrates and Hierophilus place it in the ventricle of the brain
Democritus and Aristotle throughout the whole body
Epicurus in the stomach
The Stoics about and within the heart
Erasistratus adjoining the membrane of the epicranium
Empedocles in the blood
Galen thought every part of the body had its soul
Strato has placed it betwixt the eyebrows
Chrysippus about the heart
And yours truly asks, who among these ancients is telling us the true idea of the soul and its seat? How do you know?