 Traditionally, Newton would be characterized as a mathematician for his work on the calculus and as a scientist for his work in physics. His celebrated talent in mathematics is perhaps equaled not only by his profound theorizing concerning the physical world, but also his influential experimental methods. Indeed, Newton is remarkable for the fact that his work as a theoretician is matched by his work as an experimentalist—either aspect of his oeuvre would be sufficient to secure his place in the history of modern science. So in the popular imagination, and in the history books, Newton is seen as one of the greatest scientists of the modern period, on a par with few others (perhaps Darwin or Einstein). This view will continue to dominate our understanding of Newton in the twenty-first century.