Date: 101

"'For,' it was his habit to say, 'as a stone, if you cast it upward, will be brought down to the earth by its own nature, so the man whose mind is naturally good, the more you repel him, the more he turns toward that to which he is naturally inclined.'"

— Epictetus (c. 55-c.135)

Date: 101

One should be cautious in his intimacies because, "[f]or if a man places a piece of quenched charcoal close to a piece that is burning, either the quenched charcoal will quench the other, or the burning charcoal will light that which is quenched."

— Epictetus (c. 55-c.135)

Date: 101

"Until then the good sentiments are fixed in you, and you shall have acquired a certain power for your security, I advise you to be careful in your association with common persons: if you are not, every day like wax in the sun there will be melted away whatever you inscribe on your minds in the s...

— Epictetus (c. 55-c.135)

Date: 101

"But if you consider what is proper for a man, examine your store-house, see with what faculties you came into the world."

— Epictetus (c. 55-c.135)

Date: 101

"I mean the things which belong to him as a man, the marks (stamps) in his mind with which he came into the world, such as we seek also on coins, and if we find them, we approve of the coins, and if we do not find the marks, we reject them."

— Epictetus (c. 55-c.135)

Date: 2nd Century CE

"The soul provides nature with the reason for the [presence or absence of] life, for even though it does not possess the same number of atoms as the body, being placed in it with its rational and non-rational elements, still it encompasses the whole body and, being bound by it, binds it in turn, ...

— Diogenes of Oenoanda (2nd Century CE)

Date: c. 160 A.D.

"I need not trouble you with his criticisms of the other two; but his objection to the man, and the fault he found with Hephaestus, was this: he should have made a window in his chest, so that, when it was opened, his thoughts and designs, his truth or falsehood, might have been apparent."

— Lucian of Samosata (125 A.D. - 180 A.D.)

Date: 170

"The heart is, as it were, the hearthstone and source of the innate heat by which the animal is governed."

— Galen (129-200)

Date: 250

The "one-in-many" soul derives from "not-in-many" as if it were an image stamped by one ring on many pieces of wax

— Plotinus (c. 205-270)

Date: 250

The Soul "makes them living beings not by merging into body but by giving forth, without any change in itself, images or likenesses of itself like one face caught by many mirrors"

— Plotinus (c. 205-270)