The anarchic nature of the international system means that states must rely on self-help to ensure their survival.

科学的真正回报是理解新事物的兴奋感。

The beauty of architecture lies in its ability to bring people together.

你表达得越多，就越暴露自己。

你必须为梦想而奋斗。你必须为之牺牲并努力工作。

人通过被某人需要而找到生活的意义。