I found this online article written in 2001 in the archives of Slate.com on the brilliant and troubled mathematician who was the subject of the movie, A Beautiful Mind.
A Real Number: A Beautiful Mind's John Nash is nowhere near as complicated as the real one. By Chris Suellentrop, Posted Friday, Dec. 21, 2001, at 8:27 AM ET Quoting from the article: "After a 17-year estrangement, John Stier and Nash met again. Nash criticized Stier's decision to become a nurse and urged him to go to medical school. He told Stier that it would be beneficial for his other son John (who also developed schizophrenia) to know his "less intelligent older brother."