Plotinos: Complete Works, v. 4 In Chronological Order,...

Besides, our individual characters might be derived from pre-existences. In this case we would say that our ("seminal) reason" has degenerated as a result of our antecedents, that our soul has lost her force by irradiating what was below her. Besides, our ("seminal) reason" contains within itself the very reason of our constituent matter, a matter which it discovered, or conformed to its own nature.87 In fact, the ("seminal) reason" of an ox resides in no matter other than that of an ox. Thus, as said (Plato88), the soul finds herself destined to pass into the bodies of animals other than men, because, just like the ("seminal) reason," she has altered, and has become such as to animate an ox, instead of a man. By this decree of divine justice she becomes still worse than she was.