Changing Minds: Contributions to the Study of Buddhism and Tibet in Honor of Jeffrey Hopkins
In the Buddhist Abhidharma literature, six root afflictive emotions are identified as the causes for episodes or entire lifetimes of suffering. Of these, anger holds a singular place. Like all other non-virtues, it establishes "seeds" or "roots" of non-virtue; but it is also one of a very few mental states that nullify the seeds or roots of virtue that are planted by exemplary actions such as giving and patience.
Cozort, Daniel. "Cutting the Roots of Virtue: Tsong kha pa on the Results of Anger." In Changing Minds: Contributions to the Study of Buddhism and Tibet in Honor of Jeffrey Hopkins, edited by Guy Newland, 83-105. Ithaca, New York: Snow Lion, 2001.