The anarchic nature of the international system compels states to prioritize their own survival above all else.

理论很少被更好的理论推翻，更多的是被失去兴趣的实践者抛弃。

Iteration is the key to innovation. You have to keep refining and improving your ideas until they work.

"The present is a fleeting moment, but the past is eternal."

最伟大的发现往往在你没有刻意寻找时出现。