 Among her friends there was Hans Jonas, her only Jewish classmate.Another fellow student of Heidegger's was Jonas' friend, the Jewish philosopher Gunther Siegmund Stern (1902–1992)son of the noted psychologist Ludwig Wilhelm Sternwho would later become her first husband.Stern had completed his doctoral dissertation with Edmund Husserl at Freiburg, and was now working on his "Habilitation" thesis with Heidegger, but Arendt, involved with Heidegger, took little notice of him at the time.