Are envy, anger, and resentment moral emotions?

The moral status of emotions has recently become the focus of various philosophical investigations. Certain emotions that have traditionally been considered as negative, such as envy, jealousy, pleasure-in-others'-misfortune, and pride, have been defended. Some traditionally "negative" emotions have even been declared to be moral emotions. In this brief paper, I suggest two basic criteria according to which an emotion might be considered moral, and I then examine whether envy, anger, and resentment are moral emotions.