The key to breakthrough is not just hard work, but also the courage to challenge existing paradigms.

"The truth is rarely pure and never simple."

Avoid extreme ideologies because they rob you of your sanity.

在数学中，提出问题的艺术必须比解决问题更有价值。

国家本质上是侵略性和扩张主义的，因为它们存在于一个无政府状态的国际体系中，没有更高的权威来约束它们。