SECOND ARTICLE [I, Q. 48, Art. 2]

Whether Evil Is Found in Things?

Objection 1: It would seem that evil is not found in things. For

whatever is found in things, is either something, or a privation of

something, that is a "not-being." But Dionysius says (Div. Nom. iv)

that "evil is distant from existence, and even more distant from

non-existence." Therefore evil is not at all found in things.

Obj. 2: Further, "being" and "thing" are convertible. If therefore

evil is a being in things, it follows that evil is a thing, which is

contrary to what has been said (A. 1).

Obj. 3: Further, "the white unmixed with black is the most white," as

the Philosopher says (Topic. iii, 4). Therefore also the good unmixed

with evil is the greater good. But God makes always what is best,

much more than nature does. Therefore in things made by God there is

no evil.

_On the contrary,_ On the above assumptions, all prohibitions and

penalties would cease, for they exist only for evils.

_I answer that,_ As was said above (Q. 47, AA. 1, 2), the perfection

of the universe requires that there should be inequality in things,

so that every grade of goodness may be realized. Now, one grade of

goodness is that of the good which cannot fail. Another grade of

goodness is that of the good which can fail in goodness, and this

grade is to be found in existence itself; for some things there are

which cannot lose their existence as incorruptible things, while

some there are which can lose it, as things corruptible.

As, therefore, the perfection of the universe requires that there

should be not only beings incorruptible, but also corruptible beings;

so the perfection of the universe requires that there should be some

which can fail in goodness, and thence it follows that sometimes they

do fail. Now it is in this that evil consists, namely, in the fact

that a thing fails in goodness. Hence it is clear that evil is found

in things, as corruption also is found; for corruption is itself an

evil.

Reply Obj. 1: Evil is distant both from simple being and from simple

"not-being," because it is neither a habit nor a pure negation, but a

privation.

Reply Obj. 2: As the Philosopher says (Metaph. v, text 14), being is

twofold. In one way it is considered as signifying the entity of a

thing, as divisible by the ten "predicaments"; and in that sense it

is convertible with thing, and thus no privation is a being, and

neither therefore is evil a being. In another sense being conveys the

truth of a proposition which unites together subject and attribute by

a copula, notified by this word "is"; and in this sense being is what

answers to the question, "Does it exist?" and thus we speak of

blindness as being in the eye; or of any other privation. In this way

even evil can be called a being. Through ignorance of this

distinction some, considering that things may be evil, or that evil

is said to be in things, believed that evil was a positive thing in

itself.

Reply Obj. 3: God and nature and any other agent make what is best in

the whole, but not what is best in every single part, except in order

to the whole, as was said above (Q. 47, A. 2). And the whole itself,

which is the universe of creatures, is all the better and more

perfect if some things in it can fail in goodness, and do sometimes

fail, God not preventing this. This happens, firstly, because "it

belongs to Providence not to destroy, but to save nature," as

Dionysius says (Div. Nom. iv); but it belongs to nature that what may

fail should sometimes fail; secondly, because, as Augustine says

(Enchir. 11), "God is so powerful that He can even make good out of

evil." Hence many good things would be taken away if God permitted no

evil to exist; for fire would not be generated if air was not

corrupted, nor would the life of a lion be preserved unless the ass

were killed. Neither would avenging justice nor the patience of a

sufferer be praised if there were no injustice.

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Summa Theologica, Part I (Prima Pars) From the Complete American Edition · 第 321 / 722 题