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J. Robert Oppenheimer Quotes

J. Robert Oppenheimer Quotes

J. Robert Oppenheimer was an American theoretical physicist who led the Manhattan Project during World War II. His words carry the weight of someone who grappled with the moral consequences of scientific power, and his reflections on knowledge, responsibility, and human nature remain strikingly relevant.

These quotes are well suited for history essays, ethics discussions, science presentations, or reflective writing. Browse the collection and find the ones that provoke thought.

Quotes 1–5 of 31

“I am become death, the destroyer of worlds.”

J. Robert Oppenheimer

“The optimist thinks this is the best of all possible worlds. The pessimist fears it is true.”

J. Robert Oppenheimer

“When you see something that is technically sweet, you go ahead and do it and you argue about what to do about it only after you have had your technical success. That is the way it was with the atomic bomb.”

J. Robert Oppenheimer

“If atomic bombs are to be added as new weapons to the arsenals of a warring world, or to the arsenals of nations preparing for war, then the time will come when mankind will curse the names of Los Alamos and of Hiroshima.”

J. Robert Oppenheimer

“My childhood did not prepare me for the fact that the world is full of cruel and bitter things.”

J. Robert Oppenheimer

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