Venerable American social and political theorist Berlin (1909-97), and Polanowska-Sygulska (theory and philosophy of law, Jagiellonian U., Poland) conducted an intermittent correspondence during his last 14 years. The letters published here illuminate his ideas and display a vital engagement on moral and political issues between a man who witnessed the 1917 Russian Revolution and a woman who grew up in Communist Poland. Annotation ©2006 Book News, Inc., Portland, OR (booknews.com)