According to Dr. Robert A. Ventresca, professor at King's University College at the University of Western Ontario, Cardinal Faulhaber, who wrote a first draft, was adamant that the encyclical should be careful in both its tone and substance and should avoid explicit reference to Nazism or the Nazi Party. Historian William Shirer wrote that the document accused the regime of sowing the "tares of suspicion, discord, hatred, calumny, of secret and open fundamental hostility to Christ and His Church". According to Historian Klaus Scholder, the leader of the German Bishops conference, Cardinal Bertram, sought to blunt the impact of the encyclical by ordering that critical passages should not be read aloud.