OF all our human emotions, rage is probably the basest, the most destructive, and the least understood element of our psyche.
Psychotic rage is indeed fearsome, being a precursor to, and a compulsive driving force for inexplicable unspeakable acts of violence. Springing forth from the darkest nadir of his being, somewhere deep in the pit of his stomach, nameless broiling rage can drive a man to strike out blindly, without consideration to the consequences to others and to himself. In that one instance, all the teaching of family upbringing, law and ethics evaporates, and the civilised person turns into savage beast.
Therefore, rage is a little like temporary insanity; the trouble is to define 'insanity'.