Ronald Gene Simmons, who killed 16 people in 1987, including many family members - "Let the torture and suffering in me end."

Edmund Emil "Big Ed" Kemper III, The co-ed killer - "With a girl, there's a lot left in the girl's body without a head. Of course, the personality is gone."

Charles Guiteau, the man who shot President James Garfield - "I claim that I am a man of destiny as much as the Savior, or Paul, or Martin Luther, or any of those religious men of the kind I was."

Marshall Applewhite, Heaven's Gate cult leader - "We do in all honesty hate this world."

Ariel Castro - "These people are trying to paint me as a monster. I'm not a monster. I lived a normal life, and I still practiced the art of touching myself when viewing pornography."

Jeffrey Dahmer - "I've got to start eating at home more."

Serial cannibal Albert Fish - "I always had a desire to inflict pain on others and to have others inflict pain on me. The desire to inflict pain, that is all that is uppermost."

Charles Manson - "I'm Jesus Christ, whether you want to accept it or not. I don't care."

Texas serial killer Henry Lee Lucas - "I made the police look stupid. I was out to wreck Texas law enforcement."

Brett Seacat, Kansas sheriff's deputy who murdered his wife - "I teach about crimes. I know what covers up crimes and what doesn't."

The Zodiac killer - "I like killing people because it is so much fun. It is more fun than killing wild game in the forest because man is the most dangerous animal of them all."

David Berkowitz, the Son of Sam - "The demons wanted my penis."

Charles Whitman, who committed mass murder at the University of Texas at Austin - "[I am] a victim of many unusual and irrational thoughts. I love my wife dearly. I cannot rationally pinpoint any reason for doing this."

Aileen Wuornos - To the jurors who convicted her: "May your wife and children get raped, right in the ass."

Ted Bundy - "You learn what you need to kill and take care of the details...Its like changing a tire...The 1st time you're careful...By the 30th time, you can't remember where you left the lug wrench."

Andrei Chikatilo, the Butcher of Rostov - "I was a mistake of nature, a mad beast."

George Emil Banks, who shot 13 people, including five of his own children - "My people died because I love them."