At the Nuremberg trials, Dönitz claimed the statement about the "poison of Jewry" was regarding "the endurance, the power to endure, of the people, as it was composed, could be better preserved than if there were Jewish elements in the nation." Later, during the Nuremberg trials, Dönitz claimed to know nothing about the extermination of Jews and declared that nobody among "my men thought about violence against Jews." Dönitz told Leon Goldensohn, an American psychiatrist at Nuremberg, "I never had any idea of the goings-on as far as Jews were concerned. Hitler said each man should take care of his business and mine was U-boats and the Navy." After the war Dönitz tried to hide his knowledge of the Holocaust. He was present at the October 1943 Posen Conference where Himmler described the mass murder of Jews with the intent of making the audience complicit in this crime. It cannot be proven beyond doubt that he was present during Himmler's segment of the conference, which openly discussed the murder of European Jews.