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29.2 Mackie’s logical problem of evil
Perhaps the clearest exposition of the problem of evil in recent years is that of
Mackie (1955). He presents the ‘logical problem
of evil’ as understanding how all the three propositions:
- God is wholly good (benevolent),
- God is omnipotent,
- Evil exists,
could be true simultaneously. If God is omnipotent, he should be able to
remove all evil, and if he is benevolent, he should not hesitate to do so. Mackie
argues that if any two of the propositions were true, the third would be false.
Hume (1779) states the problem about God as follows:
“Is he willing to prevent evil, but not able? Then is he impotent. Is he able, but
not willing? Then is he malevolent. Is he both able and willing? Whence then is
evil?"
We may agree with Mackie that certain proposed solutions are fallacious. Some
argue that evil is necessary for creation, others that evil is necessary for good
works to be done, and others that good cannot exist without evil. It is not orthodox
theology that evil is needed for good to exist or that is is necessary to creation.
Evil might be the occasion for good works to be done but we can still insist that
it would be better if such good works countering evil were not necessary to start
with. In all cases, therefore, we should be able to agree that it would be a better
universe if evil did not exist in the first place or if particular evils could be
removed.
We can consider the view that evil is due to human free will. Many philosophers
and theologians follow this view and hold that human freedom is a ‘great good’ that
God insists must be present in creation, even if the side effects are so many and
so damaging in terms of the injuries that we inflict on each other every day. Mackie
asks, therefore, why God “could not have made men such that they always freely choose
what is good?” He confesses, though, that in the end he finds incoherence in the
notion of freedom of the will.
I agree that it is difficult to understand how we have free will, especially
in a world where God has complete foreknowledge of our future actions. Nevertheless,
I claim that our actions are freely chosen. It would clearly help the theistic case
if there were an understanding about the existence of evil that did not depend on
the freedom of the will. I argue below that the reasons relating to evils can in
fact be expressed in much simpler terms, and that free will can also be derived
from these simpler reasons. We will see that a theodicy can be formulated that does
not directly depend on the concept of free will.
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