For Vito Caiati.  This 2021 version of a November 2010 post corrects unclarities, infelicities of expression, and outright errors in the initial entry . And the font is more legible for ancient eyes.

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When theists are confronted by atheists with the various arguments from evil, the former should not reject the premise that objective evil exists.  That would eliminate the problem, but eliminativism here as elsewhere in philosophy is a shabby evasion. (Example: How does brain activity give rise to consciousness? No problem! Consciousness is an illusion!) Evil exists and it is not merely subjective. But the same is true of holes. See Holes and Their Mode of Being.  Holes are not nothing, and that is objectively the case despite their being absences.  You could say that holes have no positive entitative status and are only as privations.  (Curiously, as argued in the linked entry, they are empirically detectable absences which is another reason to hold that they are not nothing.)

So, to accommodate the objective reality of evil we should consider whether perhaps evil has no positive entitative status and is only as a privation. In classical jargon, this is the view of evil as privatio boni. Thus Augustine, Enchiridion XI:

For what is that which we call evil but the absence of good? In the bodies of animals, disease and wounds mean nothing but the absence of health; for when a cure is effected, that does not mean that the evils which were present –namely, the diseases and wounds — go away from the body and dwell elsewhere: they altogether cease to exist; for the wound or disease is not a substance, but a defect in the fleshly substance, — the flesh itself being a substance, and therefore something good, of which those evils — that is, privations of the good which we call health — are accidents. Just in the same way, what are called vices in the soul are nothing but privations of natural good. And when they are cured, they are not transferred elsewhere: when they cease to exist in the healthy soul, they cannot exist anywhere else.

If evil is a privation or absence then the ancient problem — dating back beyond David Hume to Epicurus — of reconciling the existence of God (as traditionally defined) with the existence of evil seems either to dissolve or else become rather more tractable. Indeed, if the evil-as-privation thesis is coupled with the Platonic notion alive in both Augustine and Aquinas that Goodness is itself good as the Primary Good, the unique exemplar of goodness whence all good things receive their goodness, then one can argue from the existence of evils-as-privations to the existence of that of which they are privations. But that is a separate and very difficult topic.

Without going that far, let us first  note that the evil-as-privation doctrine does seem to accommodate an intuition that many of us have, namely, that good and evil, though opposed, are not mutually independent. Thus in one clear sense good and evil are opposites: what is good is not evil and what is evil is not good. And yet one hesitates to say that they are on an ontological par, that they are equally real. They are not opposed as two positivities. The evil of ignorance is not something positive in its own right: the evil of ignorance consists in its being an absence of something good, knowledge. Good is an ontological prius; evil has a merely derivative status as an absence of good.  In fact, I will lay it down as a condition of adequacy for any theory of evil that evil not be hypostatized.  If a (primary) substance is anything metaphysically capable of independent existence, then evil is not a substance.  That way lies Manicheanism.  There are no two co-equal 'principles' eternally at war, Good and Evil.  

The Problem of Pain

But then how are we to think of animal and human pain, whether physical or mental? Pains are standardly cited as examples of natural or physical evils as opposed to moral evils that come into the world via a misuse of free will.  Suppose you have just slammed your knee against the leg of a table. Phenomenologically, the pain is something all-too-positive. The  what-it-is-like is something quite distinctive. (This hyphenated locution from Thomas Nagel.) It is not a mere absence of well-being, but the presence of ill-being. Compare an absence of sensation in the knee with intense pain in the knee. An absence of sensation, as in a numb knee, is a mere lack; but a pain is not a mere lack, but something positive in its own right. This seems to show that not all evils can be privations.

The argument in nuce is that not all evils can be privations of good because a  felt pain is a positively evil sensation that is not an absence, lack, or privation of something good.  And so we cannot dismiss evil as privatio boni.

The same seems to hold for mental pains such as an intense sadness. It is not merely an absence of happiness, but something positive in its own right. Hence, the evil of sadness is not merely a privation of the good of happiness.  Examples are easily multiplied: Angst, terror, clinical depression, etc.

Two Possible Responses

Felt pains are counterexamples to the thesis that evils are privationes boni only if they are both evil and objectively real. Therefore:

A. One might argue that felt pains are evil but that the painfulness of a felt pain is a matter of projection.  One might flesh this out as follows. There is a certain sensory quale that I experience when my knee slams into the leg of the table. Call this the experiential substratum of the pain. I am not talking about the physical damage to the knee, if any, or about anything physical. By the experiential substratum I mean the felt datum precisely and only as felt, as lived though, as experienced.  I am talking about the physical pain as a phenomenal datum. The painfulness of this felt pain is something else again. On the objection now being considered, the painfulness of the felt pain is a matter of projection or interpretation or 'attitude': it is something supplied by the subject. The experiential substratum, the sensory quale, exists in objective reality despite the fact that its esse est percipi. But the painfulness, and thus the evil or badness of the sensory quale is an interpretation from the side of the sufferer.

What's more, this interpretation or projection can be altered or withdrawn entirely. Thus, with practice, one can learn to focus one's attention on a painful sensory quale and in so doing lessen its painfulness. If you try this, it works to some extent. After a long day of hiking over rocky trails, my feet hurt. But I say to myself, "It's only a sensation, and your aversion to it is your doing." "Master desire and aversion!" Focusing on the sensation in this way, and noting that one's attitude towards it plays a role in the painfulness, one can reduce the painfulness.  One reduces the painfulness but without eliminating the felt pain. You still feel the sensation, but you have withheld the aversive overlay. If you try it, you will see that it works to some extent.   This suggests that the painfulness is merely subjective.

Unfortunately, this response is not convincing as a general response to the problem of pain.   Imagine the physical and mental suffering of one who is being tortured to death. And then try to convince yourself that the pain in a situation like this is just a matter of 'attitude' or aversion. "Conquer desire and aversion" is a good Buddhist maxim. And a good Stoic one as well.  But I find it hard to swallow the notion that the painfulness of every painful sensation derives from the second-order stance of aversion.

I conclude that plenty of felt pains are not only objectively real but also objectively evil: their evilness is not a subjective addition.

B. One might argue that pains are objectively real, but not evil since they are outweighed by greater goods. But I'll leave the elaboration of this response for Part II. Brevity is the soul of blog.