The whole of life is just like watching a film. Only it's as though you always get in ten minutes after the big picture has started, and no-one will tell you the plot, so you have to work it out all yourself from the clues.

"The boundary between the quantum and classical worlds is not a sharp line but a blurred transition where the rules of physics shift dramatically."

不要害怕冒险和尝试新事物。

The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.