Kitap 10
4
ThoseThese are Speusippus and the Academics of Aristotle’s day; see 7.11.3, note. on the other hand who deny that that which all creatures seek to obtain is good, are surely talking nonsense. For what all think to be good, that, we assert, is good; and he that subverts our belief in the opinion of all mankind, will hardly persuade us to believe his own either. If only the irrational creatures strove to obtain what is pleasant, there would have been some sense in this contention; but inasmuch as beings endowed with intelligence do so too, how can it be right? And perhaps even the lower animals possess an instinct superior to their own natures, which seeks to obtain the good appropriate to their kind.
5
Again, these thinkers’ refutation of the argument from the converse appears equally unsound. They pain say, if pain is bad, it does not follow therefore that pleasure is good: for an evil can also be opposed to an evil and to a thing that is neither good nor evil: a statement which is indeed sound enough, but which does not apply to the things in question. If both pleasure and pain were in the class of evils, both would be also of necessity things to be avoided, and if in the class of things neutral, neither ought to be avoided, or they ought to be avoided alike; but as it is we see men avoid pain as evil and choose pleasure as good; it is therefore as good and evil that they are opposed.
