 In 1971 , he moved to a remote cabin without electricity or running water , in Lincoln , Montana , where he lived as a recluse while learning survival skills in an attempt to become self @-@ sufficient . 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 . 
