Secondly, since the part, that has the property of suffering, and that, which has the property of reasoning, are different by nature, it is meet for them to be in separate places. For they are found to be at war with each other. Now nothing is able to be at war with itself; nor can the things opposed to each other stand together at the same time about the same object. At least in the case of Medea, anger is seen to be at war with reason; for she says— I know how great the ills I'm about to do; But rage has a pow'r greater than my counsels. And in the case of Laius, when carrying off Chrysippus, desire is at war with reason; for he says— Alas! this thing from god to man's an ill, When, what is good, one knows, but uses not. Still further is it presented to the mind, that the property of suffering is different from that of reasoning, from the care of the property of reasoning being one thing, but that of suffering another; for the former is effected by the discipline of teaching; the latter by the practice of morality. — Alcinous, *Handbook of Platonism*, Ch. 24, trans. George Burges (1854), pp. 286–287. *Surface Gloss:* Reason and passion must be distinct parts of the soul in separate bodily locations because they fight each other simultaneously (as in Medea and Laius), and because they require completely different training: reason is cared for by teaching, passion by habitual practice. **The Cure-Reveals-the-Organ Diagnostic:** When two impulses inside a person or organization are fighting each other at the exact same moment, stop treating it as a single confused mind that needs better information. You can prove two subsystems are structurally separate by how they are fixed: if a lecture fixes it, it's a software/reason problem; if only repeated behavioral drill fixes it, it's a hardware/drive problem.
— In our words · Source: Handbook of Platonism (Alcinous)