Nash returns to Princeton, approaching his old rival Hansen, now head of the mathematics department, who allows him to work out of the library and audit classes. Over the next two decades, Nash learns to ignore his hallucinations and, by the late 1970s, is allowed to teach again. In 1994, Nash wins the Nobel Prize for his revolutionary work on game theory, and is honored by his fellow professors. At the ceremony, he dedicates the prize to his wife. As Nash, Alicia, and their son leave the auditorium in Stockholm, Nash sees Charles, Marcee, and Parcher watching him, but looks at them only briefly before departing.