Victor Klemperer's will to testify to his life under Nazi terror was reflected in about five thousand pages of newspapers. Written under constant threat of death due to his Jewish status -his marriage to an Aryan woman saved him from deportation-, several decades after his death they became a true publishing phenomenon, to which the Spanish version, published in two volumes by Galaxy Gutenberg (2003). This edition includes the most significant pages and that affect the description of everyday life in a dictatorial regime. The result is a document of unparalleled historical importance, which analyzes in extraordinary detail the institutionalization of terror by the Nazi apparatus, and which is both a moving and stark account of one of the darkest periods of the 20th century.