Lingua Tertii Imperii studies the way that Nazi propaganda altered the German language to inculcate people with National Socialist ideas. The book was written under the form of personal notes which Klemperer wrote in his diary, especially from the rise of the Nazi regime in 1933, and even more after 1935, when Klemperer, stripped of his academic title because he was of Jewish descent, had to work in a factory. His diary became a notebook in which he noted and commented on the linguistic relativity of the German used by Nazi officials, ordinary citizens, and even fellow Jews.