Guthrie: Tratado 2,19 (IV,7,19) — Todas as almas têm imortalidade

ALL SOULS HAVE IMMORTALITY, EVEN IF SUNK INTO ANIMALS OR PLANTS.

14. (19). What about the souls of animals inferior to man? The (rational) souls that have strayed so far as to descend into the bodies of animals are nevertheless still immortal. Souls of a kind other (than rational souls), cannot proceed from anything else than the living nature (of the universal Soul); and they necessarily are the principles of life for all animals. The case is the same with the souls that inhere in plants. Indeed, all souls have issued from the same principle (the universal Soul), all have an individual life, and are indivisible and incorporeal essences (“beings”).

EVEN IF THE SOUL HAS DIFFERENT PARTS, THE ORIGINAL PARTS SURVIVE.

To the objection that the human soul must decompose because she contains three parts, it may be answered that, when souls issue from here below, those that are purified leave what had been added to them in generation (the irrational soul,) while the other non-purified souls do free themselves therefrom with time. Besides, this lower part of the soul does not itself perish, for it exists as long as the principle from which it proceeds. Indeed, nothing that exists is annihilated.

GUTHRIE, K. S. Plotinus: Complete Works: In Chronological Order, Grouped in Four Periods. [single Volume, Unabridged]. [s.l.] CreateSpace Independent Publishing Platform, 2017.