Russell was a huge influence on me when I was in high school, and is chiefly responsible for my career choice of eventually becoming a professional philosopher. So I can hardly be expected to be detached in commenting on a book attempting to cover Russell's life and philosophy. Still, Grayling pulls it off very nicely, giving the reader a good sense of the long and complex life of Bertrand Russell, his contributions to logic and mathematics, and his writings on social and moral issues (he was very politically active, and got arrested twice for anti-war activities). The last chapter is also -- I think -- a well balanced appraisal of Russell's overall contribution to modern philosophy, both directly and through the people he influenced (beginning of course with Wittgenstein, who was Russell's student). A must read if you are interested in philosophy and don't want to tackle technical commentaries on BR.