Inside us there is something that has no name, that something is what we are.

The most important skill for an economist is the ability to think clearly about trade-offs.

文学是发现普通人身上非凡之处的艺术，用普通的语言说出非凡的事情。

The question isn't who is going to let me; it's who is going to stop me.

每一个科学进步都迫使我们面对新的伦理问题。