“Cosmus, duke of Florence, had a desperate saying against perfidious or neglecting friends, as if those wrongs were unpardonable; You shall read (saith he) that we are commanded to forgive our enemies; but you never read, that we are commanded to forgive our friends. But yet the spirit of Job was in a better tune: Shall we (saith he) take good at God's hands, and not be content to take evil also? And so of friends in a proportion. This is certain, that a man that studieth revenge, keeps his own wounds green, which otherwise would heal, and do well.
Public revenges are for the most part fortunate; as that for the death of Caesar; for the death of Pertinax; for the death of Henry the Third of France; and many more. But in private revenges, it is not so.”