Again, if one man commits adultery with a view to gain, and makes money by it, and another man does it from lust, with expenditure and loss of money, the latter would not be called grasping, but profligate, while the former would not be called profligate, but unjust [in the narrower sense]. Evidently, then, he would be called unjust because of his gain.

Once more, acts of injustice, in the former sense, are always referred to some particular vice, as if a man commits adultery, to profligacy; if he deserts his comrade in arms, to cowardice; if he strikes another, to anger: but in a case of unjust gain, the act is referred to no other vice than injustice. 96