Theodore John Kaczynski, also known as the Unabomber, is an American domestic terrorist, anarcho-primitivist, and former mathematics professor. He was a mathematics prodigy, but abandoned his academic career in 1969 to pursue a primitive life. Between 1978 and 1995, he killed three people and injured 23 others in a nationwide bombing campaign against people he believed to be advancing modern technology and the destruction of the environment. He issued a social critique opposing industrialization and advocating a nature-centered form of anarchism.