Abraham Pais was Detlev W. Bronk Professor Emeritus at The Rockefeller University in New York City. A leading theoretical physicist, he was also an esteemed science writer, the author of 'Subtle is the Lord...' for which he won the American Book Award, Inward Bound: Of Matter and Forces in the Physical World, Niels Bohr's Times, and several other books. Robert P. Crease is a Professor in the Department of Philosophy at the State University of New York, Stony Brook, and historian at Brookhaven National Laboratory. His most recent book is The Prism and the Pendulum: The Ten Most Beautiful...