The A B C of Relativity - Bertrand Russell - This is a new publication of Bertrand Russell's The A B C of Relativity. What makes it invaluable is that it is written by one of the greatest minds of the twentieth century with the intention to reach a wider circle of readers. The book should be also of interest to students of physics and philosophy of science as well as to all interested in one of the two great scientific discoveries of the twentieth century - the theory of relativity.