" Two major motives fuel the spree killer’s final, hate-filled act: revenge against the world and a desire to show that—all evidence to the contrary—he is a person to be reckoned with. Tormented by his failure to achieve those things that seem to come so easily to others—satisfying work, loving relationships—he will prove that he is special in at least one regard: in his power to wreak havoc. "

― Harold Schechter , The Serial Killer Files: The Who, What, Where, How, and Why of the World's Most Terrifying Murderers