Former University of California at Berkeley math professor Theodore John Kaczynski is escorted into the federal courthouse in Helena, Mont., Thursday, April 4, 1996.
The suspect in the Norwegian bomb attacks and shootings lifted words from the Unabomber's manifesto for his own writings.
Part of Anders Behring Breivik's 1,500-page manifesto was taken almost word for word from the first few pages of the anti-technology manifesto written by Ted Kaczynski, the Chicago native who gained infamy for a string of bombing from 1978 to 1995.
Breivik changed a Kaczynski screed on leftism and what he considered to be leftists' "feelings of inferiority" — mainly by substituting the words "multiculturalism" or "cultural Marxism" for "leftism."
For instance, Kaczynski wrote: "One of the most widespread manifestations of the craziness of our world is leftism, so a discussion of the psychology of leftism can serve as an introduction to the discussion of the problems of modern society in general."
Breivik's manifesto reads: "One of the most widespread manifestations of the craziness of our world is multiculturalism, so a discussion of the psychology of multiculturalists can serve as an introduction to the discussion of the problems of Western Europe in general."
Former FBI Agent Terry Turchie, who supervised the federal task force to capture the Unabomber, said Sunday that he saw similarities between the two men.
"They seem to have this anger, the loner aspect, this desire to look back at the way things were and think of themselves as self-reliant," said Turchie, who wrote "Hunting the American Terrorist: The FBI's War on Homegrown Terror" in 2007.
"The real problem is these loners are much more difficult to find and prevent from killing people than other kinds of terrorists," he said.