April 22 marks the birthday of Robert Oppenheimer, born 104 years ago and famously destined to become known as “the father of the atomic bomb” because of his work on the secret Manhattan Project during the Second World War. When news of the weapon of mass destruction became public with the bombing of Hiroshima, Japan, on Aug. 6, 1945, theologians jumped in on the moral debate over its use. Here is a report from the Aug. 18, 1945 issue of The Catholic Register:

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