"Paul Erdos, the most prolific and eccentric mathematician of our time, forsook all creature comforts - including a hometo pursue his lifelong study of numbers. He was a man who possessed unimaginable powers of thought yet was unable to manage some of the simplest daily tasks." "For more than six decades, Erdos lived out of two tattered suitcases, crisscrossing four continents at a frenzied pace, chasing mathematical problems and fresh talent. Erdos...