Biography The Beautiful Mind of John Nash: A Documentary on His Genius and Battle with Mental Illness John Nash was a mathematician and genius that the Hollywood movie “A Beautiful Mind” is based on. Nash had schizophrenia, but he still managed to have a fascinating life. Share This Previous ArticleJust Melvin, Just Evil: A Documentary About Sexual Abuse Next ArticleI AM A FISH HEAD: Psychopaths in the Workplace January 21, 2013