LXVII. Of things existing, some are bad, some good, and some neither one thing nor the other. Of these, we call those things bad, which are invariably capable of doing injury, such as intemperance, folly, injustice, and things of that sort. And the opposites to these qualities are good. But those things, which may at times be beneficial, and at times injurious, such as walking, sitting down, and eating; or which have absolutely no power in any case to benefit or injure any one; these are neither bad nor good. Of things existing then, there are some bad, and some good, and some of a neutral character, neither bad nor good. LXVIII. A good state of affairs with reference to the laws, is divided under three heads. One when the laws are good, for that is a good state of affairs; so too is it, when the citizens abide by the existing laws; and the third case is, when although there are no positive laws, still men are good citizens in deference to custom and to established institutions; and this is also called a good state of affairs. So that of these three heads, one depends on the laws being good, another on obedience to existing laws, and the third on men yielding to good customs and institutions. So again, lawlessness is divided into three heads. One of which is, when the laws are bad, both as concerns strangers, and the citizens; another, when the citizens do not obey the laws that are established; and the third is when there is actually no law at all. So that one kind of lawlessness arises from bad laws, another from disobedience to existing laws, and the third from the absence of laws. LXIX. Contraries are of three sorts; for instance, we say that good is contrary to evil, as justice to injustice, wisdom to folly, and so on. Again, some evils are contrary to others, as extravagance is to stinginess, and the being tortured with justice to the being tortured with injustice. And such evils as these are the contraries of other evils. Again, the heavy is contrary to the light, the swift to the slow, the black to the white; so that some things which are of a neutral character, neither good nor evil, are contrary to other things of a neutral character. Of contraries then, there are some which are so, as what is good is contrary to what is evil; others, as one evil is contrary to another; and others again, as neutral things are contrary to other things of a neutral character.