If a man insisted always on being serious, and never allowed himself a bit of fun and relaxation, he would go mad or become unstable without knowing it.
Bio: Rudolf Mildner was an SS-Standartenführer who served as the chief of the Gestapo at Katowice and who was the head of the political department at Auschwitz, conducting "third degree" methods of interrogation from March 1941 until September 1943.