Kaczynski described this as a pivotal event in his life.
He recalled not fitting in with the older children and being subjected to their bullying.
Sometimes he would cut classes and write in his journal in his room.
When it became clear that his pending trial would entail national television exposure for Kaczynski, the court entered a plea agreement, under which he pleaded guilty and was sentenced to life in prison with no possibility of parole.
He has been designated a "domestic terrorist" by the FBI.
Seventeen years after beginning his mail bomb campaign, Kaczynski sent a letter to The New York Times on April 24, 1995 and promised "to desist from terrorism" if the Times or The Washington Post published his manifesto, Industrial Society and Its Future (the "Unabomber Manifesto"), in which he argued that his bombings were extreme but necessary to attract attention to the erosion of human freedom necessitated by modern technologies requiring large-scale organization.
The Unabomber was the target of one of the Federal Bureau of Investigation's costliest investigations.
He was treated several times at the hospital over an eight-month period.
His mother wrote in March 1943, "Baby home from hospital and is healthy but quite unresponsive after his experience." As a result of testing conducted in the fifth grade, which determined he had an IQ of 167, he was allowed to skip the sixth grade and enroll in the seventh grade.He subsequently earned a Ph D in mathematics from the University of Michigan.He became an assistant professor at the University of California, Berkeley in 1967 at age 25. As a Harvard undergraduate, Kaczynski was among twenty-two students who were research subjects in ethically questionable experiments conducted by psychology professor Henry Murray from late 1959 to early 1962.Before Kaczynski's identity was known, the FBI used the title "UNABOM" (UNiversity & Airline BOMber) to refer to his case, which resulted in the media calling him the Unabomber.The FBI (as well as Attorney General Janet Reno) pushed for the publication of Kaczynski's "Manifesto", which led to his sister-in-law, and then his brother, recognizing Kaczynski's style of writing and beliefs from the manifesto, and tipping off the FBI.While growing up in Evergreen Park he was a child prodigy, excelling academically from an early age.