Psychological Fragments (on the faculties of the soul, from Stobaeus)
C. Nemesius.[363]
Aristotle says, in his Physics,[364] that the soul has five faculties, the power of growth, sensation, locomotion, appetite, and understanding. But, in his Ethics, he divides the soul into two principal parts, which are rational part, and the irrational part; then Aristotle subdivides the latter into the part that is subject to reason, and the part not subject to reason.
D. Jamblichus.[365]
The Platonists hold different opinions. Some, like Plotinos and Porphyry, reduce to a single order and idea the different functions and faculties of life; others, like Numenius, imagine them to be opposed, as if in a struggle; while others, like Atticus and Plutarch, bring harmony out of the struggle.
E. Ammonius Saccas.