Book 2
19
Moreover, perhaps someone might say that in some cases these actions are done of necessity and in others not. For in cases where the presence or absence of such circumstances depends on the agent himself,Or for in those of such acts which it rests with himself to do or not. even the actions that he does without wishing to do them he does willingly and not under compulsion; but where in such cases the circumstances do not rest with himself, he acts under compulsion in a sense, though not indeed under compulsion absolutely, because he does not definitely choose the actual thing that he does but the object for which he does it; since even in the objects of action there is a certain difference.
20
For if someone were to kill a man to prevent his catching him by groping for him,i.e. in blind-man’s-bluff, μυΐνδα or χαλκῆ μυῖα. it would be ridiculous for him to say that he had done it under compulsion and of necessity—there must be some greater and more painful evil that he will suffer if he does not do it. It is when a man does something evil for the sake of something good, or for deliverance from another evil, that he will be acting under necessity and by compulsion, or at all events not by nature; and then he will really be acting unwillingly, for these actions do not rest with himself.
21
On this account many reckon even love as involuntary, and some forms of anger, and natural impulses, because their power is even beyond nature; and we pardon them as naturally capable of constraining nature. And it would be thought that a man is acting more under compulsion and involuntarily when his object is to avoid violent pain than when it is to avoid mild pain, and in general more when his object is the avoidance of pain than when it is to gain enjoyment. For what rests with himself—and it wholly turns on this—means what his nature is able to bear; what his nature is not able to bear and what is not a matter of his own natural appetition or calculation does not rest with himself.
