Robert Oppenheimer

Julius Robert Oppenheimer (22 April 1904 – 18 February 1967) was an American physicist and the scientific director of the Manhattan Project.

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April 10, 2026

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"I believe that through discipline, though not through discipline alone, we can achieve serenity, and a certain small but precious measure of the freedom from the accidents of incarnation, and charity, and that detachment which preserves the world which it renounces. I believe that through discipline we can learn to preserve what is essential to our happiness in more and more adverse circumstances, and to abandon with simplicity what would else have seemed to us indispensable; that we come a little to see the world without the gross distortion of personal desire, and in seeing it so, accept more easily our earthly privation and its earthly horror — But because I believe that the reward of discipline is greater than its immediate objective, I would not have you think that discipline without objective is possible: in its nature discipline involves the subjection of the soul to some perhaps minor end; and that end must be real, if the discipline is not to be factitious. Therefore I think that all things which evoke discipline: study, and our duties to men and to the commonwealth, war, and personal hardship, and even the need for subsistence, ought to be greeted by us with profound gratitude, for only through them can we attain to the least detachment; and only so can we know peace."

- Robert Oppenheimer

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"He was the genius of the nuclear weapons age and also the walking, talking conscience of science and civilisation; most of the great questions surrounding him as a person were the greatest questions of that time. He was born into an intellectual New York Jewish family and as a young man experienced the revolution in theoretical physics in the 1920s at first hand in Europe, before settling in California and building a world-class research centre there. Though he had no record as a manager, when war came he was chosen as the Manhattan Project's chief scientist and his inspirational leadership saw it through to success. Peace found him a national hero and a powerful voice in Washington, but he was also increasingly anxious about the drift into Cold War. These qualms made him enemies, so his pre-war left-wing past was dredged up and, at those 1954 hearings, he was subjected to what one observer called a "dry crucifixion". … Not a shred of credible evidence was ever produced to suggest that the man was disloyal, still less that he was a spy. The worst that could be proved against him was one or two lapses of judgement in dealings with left-wing friends in the early years of the war — piffling faults, as Isidor Rabi pointed out, when set beside his achievements. So demented were his enemies that, even after what they described as his "unfrocking" — the official decision that he did indeed pose a risk to national security — they insisted he was on the brink of defecting to the Soviet Union and so must continue to be followed and bugged wherever he went."

- Robert Oppenheimer

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"The custom for these colloquia was that Oppenheimer, a very punctual guy, would walk out on stage from one of the wings, make a few general remarks in his own quiet way, and then introduce the speaker. Not this time. He arrived very late and entered the theater from the rear, strode down the aisle while all of us rose and cheered him, stomped our feet and in general behaved like a pack of bloodthirsty savages welcoming back their conquering warriors, who were displaying the heads or genitals, or both, of the conquered. When Oppenheimer was able to finally quiet down the mob, he set about telling us what little was known about the results of the bombing. There was one thing he knew for sure: the “Japs” (not Japanese) didn’t like it. More howling, foot stomping, and the like. Then he got to the nub of the matter: While we apparently had been successful, and his chest was practically bursting with pride, he did have one deep regret, that we hadn’t completed the Bomb in time to use against the Germans. That really brought down the house. This had to be the most fascinating, to say nothing about being the most historic, speech I’ve ever heard. Apart from those who were there that night, I don’t recall ever meeting anyone who had ever heard of it. There’s an explanation for this that I won’t bother to go into here because that’s not what I’m writing about. That’s a matter for a good investigative reporter with an historic bent to go into, and maybe get himself a Pulitzer award."

- Robert Oppenheimer

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"One of the first interesting experiences I had in this project at Princeton was meeting great men. I had never met very many great men before. But there was an evaluation committee that had to try to help us along, and help us ultimately decide which way we were going to separate the uranium. This committee had men like Compton and Tolman and Smyth and Urey and Rabi and Oppenheimer on it. I would sit in because I understood the theory of how our process of separating isotopes worked, and so they'd ask me questions and talk about it. In these discussions one man would make a point. Then Compton, for example, would explain a different point of view. He would say it should be this way, and he was perfectly right. Another guy would say, well, maybe, but there's this other possibility we have to consider against it. So everybody is disagreeing, all around the table. I am surprised and disturbed that Compton doesn't repeat and emphasize his point. Finally at the end, Tolman, who's the chairman, would say, "Well, having heard all these arguments, I guess it's true that Compton's argument is the best of all, and now we have to go ahead." It was such a shock to me to see that a committee of men could present a whole lot of ideas, each one thinking of a new facet, while remembering what the other fella said, so that, at the end, the decision is made as to which idea was the best -- summing it all up -- without having to say it three times. These were very great men indeed."

- Robert Oppenheimer

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