A quote
Besides, there cannot be one soul to two living things, much less to many living things. And if Justice, Bravery, Restraint, and all the other virtues, are living things, how will they have one soul? They must possess separate souls, or else they are not living things.
Seneca·Letter 113 — On the Vitality of the Soul and Its Attributes (§12)·trans. Gummere