Einstein, Hemmingway, Van Gogh. These are some of the most gifted and talented minds ever to grace the earth. Were they normal? No, in fact they were far from it. Each had weaknesses of his own. Einstein was known to be a little crazy. Hemmingway enjoyed throwing one back every now and again. And Van Gogh was deeply depressed for years. So can these men still be geniuses despite their conditions? If so, then was the great John Nash brilliant as well or simply insane?