Richard P. Feynman (1918–1988) was professor of physics at the California Institute of Technology. A. Zee is professor of physics at the Kavli Institute for Theoretical Physics at the University of California, Santa Barbara. His many books include Fly by Night Physics, On Gravity, Group Theory in a Nutshell for Physicists, Einstein Gravity in a Nutshell, Quantum Field Theory in a Nutshell, and Fearful Symmetry (all Princeton). Feynman's bestselling...