Fischer, like Morphy, chose to stop playing when he was still young. He had a lifelong history of disputes, conflicts and controversy. He believed he was the victim of conspiracies. Fischer showed symptoms of the mental illness paranoia, similar to Morphy. In "Bobby Fischer: The Wandering King", authors Hans Böhm and Kees Jongkind write that Fischer's radio broadcasts show that he was "out of his mind ... a victim of his own mental illness".