人生好比是一次航程。

Life is about making an impact, not making an income.

注意力是心灵以清晰生动的形式，从几个同时可能出现的对象或思绪中占据一个。

States are rational actors that seek to maximize their power and security in an anarchic international system.

最重要的事情是让最重要的事情保持最重要。