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.

系统的架构对其行为的影响比其知识内容更大。

逝者多于生者，而他们的遗产在我们体内延续。

I always try to push the boundaries of what's possible in film, to explore new techniques and technologies.

"The truth is rarely pure and never simple."

历史不会重复，但会押韵。