When Albert Speer was sentenced by the Nuremberg tribunal in 1948 to twenty years in prison, Hugh Trevor-Roper wrote: 'Now you will probably have the opportunity to write your autobiography. They will be the only memoirs of the Third Reich that, being of great value, will also invite reading. " The book that we present today is the passionate chronicle of a man who for twelve years was united with Adolf Hitler by a unique relationship, although of a different sign: as a remodeling architect of the city of Berlin, capital of the Empire, as a close friend in the social gatherings of the Reich Chancellery, as a technocrat and organizer of a prodigious arms structure and, at the same time, as an unexpected opponent. The document that we present today is undoubtedly one of the most valuable to understand a turbulent period in our recent history.