" A number of wise men have warned us against the would-be benefits of vengeance. Mark Twain said, “Therein lies the defect of revenge: it’s all in the anticipation; the thing itself is a pain, not a pleasure; at least the pain is the biggest end of it.” Walter Weckler further observed that “revenge has no more quenching effect on emotions than salt water has on thirst.” And Albert Schweitzer noted that “Revenge . . . is like a rolling stone, which, when a man hath forced up a hill, will return upon him with a greater violence, and break those bones whose sinews gave it motion. "

― Dan Ariely , The Irrational Bundle