J. Robert Oppenheimer: When I came to you with those calculations, we thought we might start a chain reaction that would destroy the entire world.
Albert Einstein: I remember it well. What of it?
J. Robert Oppenheimer: I believe we did.
J. Robert Oppenheimer: They won't fear it until they understand it. And they won't understand it until they've used it. Theory will take you only so far.
Edward Condon: Why would we move out to the middle of the desert for two to three years?
Leslie Groves: Why? How about because this is the most important fucking thing to ever happen in the history of the world.
J. Robert Oppenheimer: Since when are you British?
Klaus Fuchs: Since Hitler told me I wasn't German.
Leslie Groves: Are you saying that there's a chance that when we push that button... we destroy the world?
J. Robert Oppenheimer: The chances are near zero.
Leslie Groves: Near zero?
J. Robert Oppenheimer: What do you want from theory alone?
Leslie Groves: Zero would be nice.
Answer: The black and white scenes are shown from the perspective of Lewis Strauss (Robert Downey Jr.), whereas the scenes in colour are shown from Oppenheimer's perspective.
Casual Person