 On 30 November 1942, he gave the Gestapo a written statement explaining why he had been and would remain a Resistance fighter.The first factor was my seven-year confinement from 1933 to 1940 — four years of which were in concentration camps — during which I experienced, saw and heard abominable things.This period removed any shadow of a doubt regarding my political views and made rock solid my conviction, that a society, in which such things as I had experienced are possible, must be eliminated.