It's very exciting, but if you think you know everything you don't need to learn, you don't belong to us. I always need to learn.

这很令人兴奋，但如果你认为,你什么知道，你不需要学习了，那么请你退出百度，因为人总是在学习。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

So, I've never heard the click-click-click-click-click, and we might bring a Geiger counter in here some time later in the semester so we can check all of you out, and hopefully we won't hear any when we do that either.

但我知道如果,你听到哒哒哒的声音，就表明你有麻烦了，我从来没听到过哒哒哒的声音,也许以后我可以带一个,来课堂上检测你们每一个人，希望我们不会听到哒哒哒的声音。

麻省理工公开课 - 化学原理课程节选

On the one hand, it could be that certain facts, if you knew them, would cause you to behave differently without actually giving you any reason to behave differently.

一方面，可能有某些事实，如果你知道了它们，会导致你的行为不同,但并没有真正地给你改变行为的理由。

耶鲁公开课 - 死亡课程节选

But if you wanted to know it You could, you would look at development and you'd watch the embryological development of a zebra and that's how you would learn the answer to your question.

但如果你想要知道答案,你就应当去观察斑马的发育过程,观察斑马的胚胎发育,这就是寻找该问题答案的方法

耶鲁公开课 - 心理学导论课程节选

Is art important enough to you that you'd be prepared to watch, look at a masterpiece, if you knew that while you were enjoying it you could die, ? but that wouldn't happen otherwise?

艺术有没有重要到,让你准备好去看，去欣赏一件杰作，如果你知道在欣赏它的时候可能会死，但如果不去欣赏就不会死？

耶鲁公开课 - 死亡课程节选

Right now I want to go out with Peggy Sue, but if I knew these true--It's not that you think, oh your roommate has made it up, that these are lies; these are slander.

现在我想和Peggy，Sue约会，但如果我知道这些事实，不是你所想的那样，你室友瞎编的，都是些谎话;,它们是诽谤。

耶鲁公开课 - 死亡课程节选