国家是理性的行为者，在无政府状态的国际体系中寻求最大化其权力和安全。
States are rational actors that seek to maximize their power and security in an anarchic international system.
"The truth is, we all have our own prisons, and the key is always within reach."
释义：尺子不准确，画不出方形；圆规不标准，画不出圆形。
这个世界是个美好的地方，值得为之奋斗。
The best art comes from personal experience.
The little flower lies in the dust。 It sought the path of the butterfly。
数学中的每个问题都是一个等待解决的谜题，而乐趣就在于解决的过程。
The best way to make your dreams come true is to wake up.