to say, that you should be severe to those you know not; for this behaviour is proper for no one: nor are those who are of a noble disposition harsh in their manners, excepting only to the wicked; and when they are particularly so, it is, as has been already said, against their friends, when they think they have injured them; which is agreeable to reason: for when those who think they ought to receive a favour from any one do not receive it, beside the injury done them, they consider what they are deprived of: hence the saying, "Cruel are the wars of brothers;" and this, "Those who have greatly loved do greatly hate." And thus we have nearly determined how many the inhabitants of a city ought to be, and what their natural disposition, and also the country how large, and of what sort is necessary; I say nearly, because it is needless to endeavour at as great accuracy in those things which are the objects of the senses as in those which are inquired into by the understanding only.
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