Sound Credit: Voice of America Brodacast, December 10, 1945; National Archives Control Number NNSM(s)-306-EN-8554

"Today, the physicists who participate in watching the most formidable and dangerous weapon of all time... cannot desist from warning and warning again: we cannot and should not slacken in our efforts to make the nations of the world and especially their governments aware of the unspeakable disaster they are certain to provoke unless they change their attitude towards each other and towards the task of shaping the future. We helped in creating this new weapon in order to prevent the enemies of mankind from achieving it ahead of us. Which, given the mentality of the Nazis, would have meant inconceivable destruction, and the enslavement of the rest of the world....