Why would anybody want to write another book about Albert Einstein? Why would anybody want to read it? These are two separate questions, but both of them have satisfactory answers. In spite of the large number of books already written about Einstein, there is still room for one more.
For years I wondered whether the ingenious premise of Agatha Christie’s “The Witness for the Prosecution” influenced John le Carré to use the same premise in The Spy Who Came in from the Cold. So I asked him, and he replied. But first the facts.