最高尚的快乐是理解的喜悦。

清晰和秩序是优秀写作的基础。

"History is the present projected backwards."

我很幸运能做我喜欢的事情。

I always tell my kids, 'If you're going to do something, do it well. And if you're not going to do it well, don't do it at all.'

我不害怕失败，我害怕不去尝试。

过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。