Hannah Arendt (, US also , German: [ˈaːʁənt]; 14 October 1906 – 4 December 1975) was a political philosopher, author, and Holocaust survivor. She is widely considered to be one of the most influential political theorists of the 20th century.Arendt was born in Linden, which later became a district of Hanover, in 1906, to a Jewish family. When she was three, her family moved to Königsberg, the capital of East Prussia, so that her father's syphilis could be treated. Paul Arendt had contracted the disease in his youth, and it was thought to be in remission when Arendt was born. He died when she was seven. Arendt was raised in a politically progressive, secular family; her mother was an ardent supporter of the Social Democrats. After completing secondary education in Berlin, Arendt studied at the University of Marburg under Martin Heidegger, with whom she had a four-year affair. She obtained her doctorate in philosophy writing on Love and Saint Augustine at the University of Heidelberg in 1929 under the direction of the existentialist philosopher Karl Jaspers.