Timaeus
Physiology and Human Nature (86e)
Timaeus: but the wicked man becomes wicked by reason of some evil condition of body and unskilled nurture, and these are experiences which are hateful to everyone and involuntary. And again, in respect of pains likewise the soul acquires much evil because of the body. For whenever the humors which arise from acid and saline phlegms, and all humors that are bitter and bilious wander through the body and find no external vent
10. The Key (8)
This is the sentence of the vicious soul. And the soul's vice is ignorance. For that the soul who hath no knowledge of the things that are, or knowled...
(8) But if a soul on entering the body of a man persisteth in its vice, it neither tasteth deathlessness nor shareth in the Good; but speeding back again it turns into the path that leads to creeping things. This is the sentence of the vicious soul. And the soul's vice is ignorance. For that the soul who hath no knowledge of the things that are, or knowledge of their nature, or of Good, is blinded by the body's passions and tossed about. This wretched soul, not knowing what she is, becomes the slave of bodies of strange form in sorry plight, bearing the body as a load; not as the ruler, but the ruled. This [ignorance] is the soul's vice.
On the Nature and Source of Evil (4)
The bodily Kind, in that it partakes of Matter is an evil thing. What form is in bodies is an untrue-form: they are without life: by their own...
(4) The bodily Kind, in that it partakes of Matter is an evil thing. What form is in bodies is an untrue-form: they are without life: by their own natural disorderly movement they make away with each other; they are hindrances to the soul in its proper Act; in their ceaseless flux they are always slipping away from Being.
Soul, on the contrary, since not every Soul is evil, is not an evil Kind.
What, then, is the evil Soul?
It is, we read, the Soul that has entered into the service of that in which soul-evil is implanted by nature, in whose service the unreasoning phase of the Soul accepts evil- unmeasure, excess and shortcoming, which bring forth licentiousness, cowardice and all other flaws of the Soul, all the states, foreign to the true nature, which set up false judgements, so that the Soul comes to name things good or evil not by their true value but by the mere test of like and dislike.
But what is the root of this evil state? how can it be brought under the causing principle indicated?
Firstly, such a Soul is not apart from Matter, is not purely itself. That is to say, it is touched with Unmeasure, it is shut out from the Forming-Idea that orders and brings to measure, and this because it is merged into a body made of Matter.
Then if the Reasoning-Faculty too has taken hurt, the Soul's seeing is baulked by the passions and by the darkening that Matter brings to it, by its decline into Matter, by its very attention no longer to Essence but to Process- whose principle or source is, again, Matter, the Kind so evil as to saturate with its own pravity even that which is not in it but merely looks towards it.
For, wholly without part in Good, the negation of Good, unmingled Lack, this Matter-Kind makes over to its own likeness whatsoever comes in touch with it.
The Soul wrought to perfection, addressed towards the Intellectual-Principle, is steadfastly pure: it has turned away from Matter; all that is undetermined, that is outside of measure, that is evil, it neither sees nor draws near; it endures in its purity, only, and wholly, determined by the Intellectual-Principle.
The Soul that breaks away from this source of its reality to the non-perfect and non-primal is, as it were, a secondary, an image, to the loyal Soul. By its falling-away- and to the extent of the fall- it is stripped of Determination, becomes wholly indeterminate, sees darkness. Looking to what repels vision, as we look when we are said to see darkness, it has taken Matter into itself.
The Works of Dionysius the Areopagite
On Divine Names, Caput IV (27)
For deformity and disease are a defect of form, and a deprivation of order. And this is not altogether an evil, but a less good; for if a dissolution ...
(27) But, neither is the Evil in bodies. For deformity and disease are a defect of form, and a deprivation of order. And this is not altogether an evil, but a less good; for if a dissolution of beauty and form and order become complete, the body itself will be gone. But that the body is not cause of baseness to the soul is evident, from the fact that baseness continues to coexist even without a body, as in demons. For this is evil to minds and souls and bodies, (viz.) the weakness and declension from the habitude of their own proper goods.