大国总是在寻找机会以牺牲对手为代价来获取权力，如果他们相信使用武力会带来战略优势，他们就会使用武力。
The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they believe it will bring them strategic advantage.
The greatest weapon against stress is our ability to choose one thought over another.
光是理解世界的关键。
The writer must be a smuggler of truths, a clandestine agent of freedom.
We must invest in people as much as we invest in technology; both are essential to progress.
我不定义任何东西，不管是美，还是爱国。每件事在我眼里该是什么就是什么，没有什么优先规则使之应该成为什么。
If you're not failing, you're not trying hard enough.
强调历史研究既要理解历史背景，又要保持学术批判性。