Adam Smith,
The Theory of Moral Sentiments…
“ Mankind, at the same time, have a very strong sense of the injuries that are done to another. The villain, in a tragedy or romance, is as much the object of our indignation, as the hero is that of our sympathy and affection. We detest Iago as much as we esteem Othello; and delight as much in the punishment of the one, as we are grieved at the distress of the other. But though mankind have so strong a fellow-feeling with the injuries that are done to their brethren, they do not always resent them the more that the sufferer appears to resent them. ”
