The greatest battles are not fought with weapons, but with ideas.

You are not defined by your past, you are prepared by your past.

科学不仅仅是发现；它是关于改变人们的生活。

We need to be able to trust the infrastructure of the Internet.

风险管理的核心在于预防和预警。

We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.

"I'm not a theorist. I'm not an intellectual. I write plays."