Most people think of mathematicians as solitary, working away in isolation. And,
it's true, many of them do. But Paul Erdos never followed the usual path. At the
age of four, he could ask you when you were born and then calculate the number
of seconds you had been alive in his head. But he didn't learn to butter his own
bread until he turned twenty. Instead, he traveled around the world, from one
mathematician to the next, collaborating on an astonishing number of
publications. With a simple, lyrical text and richly layered illustrations, this
is a beautiful introduction to the world of math and a