What we learn from history is that people don't learn from history.

安全困境是国际政治的一个基本特征，因为国家增加自身安全的努力往往会降低其他国家的安全。

我们感知到的每一种气味都是分子和受体之间复杂的相互作用，理解这种相互作用是理解我们感官体验的关键。

The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.

The poor are often more entrepreneurial than the rich, but they lack the tools to succeed.

"The most important thing is to keep learning and adapting."

数学研究是具体与抽象之间不断的对话。