Body, soul, intelligence: to the body belong sensations, to the soul appetites, to the intelligence principles. To receive the impressions of forms by means of appearances belongs even to animals; to be pulled by the strings of desire belongs both to wild beasts and to men who have made themselves into women, and to a Phalaris and a Nero: and to have the intelligence that guides to the things which appear suitable belongs also to those who do not believe in the gods, and who betray their country, and do their impure deeds when they have shut the doors. If then everything else is common to all that I have mentioned, there remains that which is peculiar to the good man, to be pleased and content with what happens, and with the thread which is spun for him; and not to defile the divinity which is planted in his breast, nor disturb it by a crowd of images, but to preserve it tranquil, following it obediently as a god, neither saying anything contrary to the truth, nor doing anything contrary to justice. And if all men refuse to believe that he lives a simple, modest, and contented life, he is neither angry with any of them, nor does he deviate from the way which leads to the end of life, to which a man ought to come pure, tranquil, ready to depart, and without any compulsion perfectly reconciled to his lot.
As to the animals which have no reason and generally all things and objects, do thou, since thou hast reason and they have none, make use of them with a generous and liberal spirit. But towards human beings, as they have reason, behave in a social spirit. And on all occasions call on the gods, and do not perplex thyself about the length of time in which thou shalt do this; for even three hours so spent are sufficient.
Among the animals which have not reason one life is distributed; but among reasonable animals one intelligent soul is distributed: just as there is one earth of all things which are of an earthy nature, and we see by one light, and breathe one air, all of us that have the faculty of vision and all that have life.