In this collection of lectures that Richard Feynman originally gave in 1963, unpublished during his lifetime, the Nobel Prize-winning physicist discusses several mega questions of science. What is the nature of the tension between science and religious faith? Why does uncertainty play such a crucial role in the scientific imagination? Is this really a scientific age?

Marked by Feynman's characteristic combination of rationality and humor, these lectures provide an intimate glimpse at the man behind the legend. He says at the start of his final lecture, "I dedicate this lecture to showing what ridiculous conclusions and rare statements such a man as myself can make." Rare, perhaps, and irreverent, sure. But ridiculous? Not even close.

Richard Phillips Feynman (1918-1988) earned a B.S. from M.I.T. and a Ph.D. from Princeton. From 1942 to 1945, he assisted with the development of the atomic bomb. He then taught at Cornell and Caltech, where he contributed to the theories of superfluidity and quarks. He shared the 1965 Nobel Prize in Physics for work on the theory of quantum electrodynamics.