"I don't think exactly like a professional economist. I think about economics and economic ideas, but..." — John Forbes Nash, Jr.

The dollar used to be a gold standard currency. And the dollar is really good in the last century, I mean in the 19th century.

I was the most important person of the world, and people like the Pope would be just like enemies, who would try to put me down in some way or another, or the president. People are always selling the idea that people who have mental illness are suffering.

If things are not so good, you may be one to imagine something better. For me, I was able to imagine myself as in a role of greater importance than I would seem to be ordinarily.

I would not dare to say that there is a direct relation between mathematics and madness, but there is no doubt that great mathematicians suffer from maniacal characteristics, delirium, and symptoms of schizophrenia.