I don't care what others say, only what I do.

你必须努力才能到达顶峰，但你必须更加努力才能留在那里。

To understand the world, you must first understand a place like Mississippi.

最难的事情是简单。

To solve a problem, one must first understand its nature and then find the right tools to tackle it.

国家间最重要的政治区别不在于其政府形式，而在于其政府程度。