“Forgiveness is a special kind of moral virtue that always and without exception occurs when the other person has been unfair to you,” professor of education psychology at the University of Wisconsin Robert Enright tells Vox. “When that person is unfair to you, and you willingly choose to forgive — it’s not forced upon you — you are basically good to the one who was not good to you. You’re deliberately trying to get rid of the resentment and offer goodness of some kind: respect, kindness, anything that is good for the other person.”