Meanwhile, Adrian Albert, the chairman of the mathematics department of the University of Chicago, called Norman Levinson. What was [John] Nash's state of mind? He asked Levinson. Chicago had made an offer of a prestigious chair to Nash, Nash was scheduled to give a talk, and now he had received a very odd letter from Nash. It was a refusal of the Chicago offer. Nash had thanked Albert for his kind offer but said he would have to decline because he was scheduled to become Emperor of Antarctica. (pg. 244
The insane will always hold a special place in my heart.