From Anger, Madness, and the Daimonic: The Psychological Genesis of Violence, Evil, and Creativity by Stephen Diamond, page 15:

Zaslow boldly defines rage as “the highest, most intense form of arousal for full materialization of resources that can be used destructively or constructively … It is the peak experience of anger, as well as the peak experience of joy.” For to feel rage fully, to be totally filled with it, even temporarily overcome or possessed by it, is to know a type of ecstasy - a momentary loss of voluntary control, social inhibition and self-discipline; a surrender to animal instinct as occurs during sexual orgasm; a direct - and sometimes purposely sought after - participation mystique in the daimonic powers of nature.