Henry A. Wallace

Henry A. Wallace appears in the account as a senior government official who gave J. Robert Oppenheimer a rare opportunity to speak privately about the dangers of the atomic bomb. Their October 1945 walk through Washington exposed the gap between Oppenheimer’s hopes for international control and the administration’s handling of nuclear policy; Wallace’s diary became a record of the physicist’s anxiety and the scientists’ burden of guilt.

Position and First Encounter

On October 18, 1945, the day after an awards ceremony in Los Alamos, Oppenheimer spoke to senators at a Washington conference about the perils the atomic bomb posed to the country. Wallace, who had been vice president during Franklin D. Roosevelt’s third term and was then serving as Harry S. Truman’s commerce secretary, was also present. Oppenheimer approached him and asked to speak privately. Wallace invited him to walk the following morning.

The Walk and Oppenheimer’s Warning

As the two men walked downtown toward the Commerce Department, Oppenheimer rapidly laid out his anxieties about the administration’s policies. He objected to James F. Byrnes’s view that the bomb could be used as a diplomatic weapon, arguing that the Soviet Union had capable physicists and abundant resources and would respond by building its own arsenal. In Oppenheimer’s view, the handling of the matter at Potsdam had helped prepare the way for a future slaughter on a vast scale.

Oppenheimer told Wallace that scientists had been deeply concerned about the possibility of war with the Soviet Union even before the Trinity test. He had expected the Roosevelt administration to establish a way to communicate with the Soviets about the bomb, and suspected British objections had prevented it. He praised Henry L. Stimson’s approach, including a September 11 memorandum to Truman that Oppenheimer understood to advocate sharing industrial as well as scientific knowledge with the Soviet Union. Wallace interrupted to tell him that Stimson’s position had never been presented at a Cabinet meeting. Oppenheimer was disturbed by the news and said that his scientists in New Mexico were disheartened, preoccupied with the bomb’s social and economic implications.

Wallace recorded the physicist’s condition as strikingly intense: “I never saw a man in such an extremely nervous state as Oppenheimer. He seemed to feel that the destruction of the entire human race was imminent.” His diary also preserved Oppenheimer’s prediction that the Soviets would spare no effort to obtain atomic bombs and his fear that the diplomatic mishandling of the issue could lead to the deaths of tens or hundreds of millions of innocent people.

Advice and Aftermath

During the walk, Oppenheimer asked whether it would help to see the president. Wallace encouraged him to seek an appointment through the new secretary of war, Robert P. Patterson. The two men then parted. Six days later, Oppenheimer was ushered into the Oval Office, where he argued that the international problem should be defined before the national one. Wallace’s advice was part of the route Oppenheimer considered toward that meeting; the account does not suggest that Wallace himself arranged it.

Wallace’s diary gave the encounter a lasting personal record beyond its policy implications. Reflecting on the scientists’ remorse, he wrote, “The guilt consciousness of the atomic bomb scientists is one of the most astounding things I have ever seen.” The observation captures Wallace’s role in this episode: he listened as Oppenheimer connected the bomb’s immediate political use to the prospect of an arms race, and recognized the extraordinary moral distress that accompanied the scientists’ work.