Nash taught at MIT from 1951-1959 when he lost his job after being struck with the disease, paranoid schizophrenia. At MIT, he worked on the theory of real algebraic varieties, Riemannum geometry, and parabolic and elliptic differential equations. He was called the most promising mathematician in the world before the disease struck.
Miraculously, the disease began to vanish in the 1970's and Nash returned to his mathematical studies. He won a Nobel Prize in 1994 for a paper written in 1949, called "Nash Equilibrium", for strategic non-cooperative games. He followed this up with "Nash Bargaining Solution"(1951) and "Nash Programme" (1952). Nash is now in his seventies and keeps an office at Princeton in order to continue his work in mathematics.
Reported by: Sabrina Coffelt
References:
Nash, John F. (1994) &endash; Les Prix Nobel , The Nobel Foundation Web Site: Economic Sciences. http://www.nobel.se/laureates/economy-1994-2-autobio.html
Smithsonian: May 1999 Volume 30, Number 2, pg. 135, Book Reviews: A Beautiful Mind, Sylvia Nassar, Simon & Schuster . Web Site: http://irving.vassar.edu/faculty/gj/History/nash.htm