A few years later, he gave a hint of his feelings to Max Born, his former professor in Göttingen, who had made it clear that he rather disapproved of Oppenheimer’s decision to work on the atomic bomb. “It is satisfying to have had such clever and efficient pupils,” Born wrote in his memoirs, “but I wish they had shown less cleverness and more wisdom.” Oppenheimer wrote Born, “Over the years, I have felt a certain disapproval on your part for much that I have done. This has always seemed to me quite natural, for it is a sentiment that I share.”
