Memoir of a Thinking Radish"He's tart, tough minded, terribly British an imposing grand master of aphorism, argument and lightning bolt one liners." So Newsweek writer wrote of Sir Peter Medawar, the renowned British immunologist. "The most accomplished writer of popular science essays," declared the Philadelphia Inquirer. Now this Nobel Prize winning scientist and highly acclaimed author of Pluto's Republic, Aristotle to Zoos, and many other books has written a fascinating