The dramatic trajectory of the enfant prodige Theodore “Ted” Kaczynski came to an end on 10 June 2023. Once a brilliant young mathematician, he became tragically notorious for the sequence of bombings that he perpetrated between 1978 and 1995 under the pseudonym “Unabomber,” a code name assigned by the FBI. Convicted and sentenced to life imprisonment without the possibility of release, Kaczynski ultimately took his own life in his cell at the federal prison in Butner, North Carolina. A considerable body of writing and commentary has accumulated around the figure and life of Theodore J. Kaczynski—much of it historically imprecise and often “romanticized.” Interpretations of his thoughts and actions oscillate between pure exaltation (“a misunderstood genius of mathematics” or “bearer of new and revolutionary ideas”) and complete denial of any significant scientific merit, both as a mathematician and a sociologist. This chapter aims to put some of these aspects into a different perspective and explore Kaczynski’s legacy as well.