I think the smallpox vaccine we made now would probably be better, more effective, and safer than the vaccines we made in the '50s.

我相信若我们现在制造天花疫苗,应该会比五十年代的更有效更安全

耶鲁公开课 - 生物医学工程探索课程节选

So what I want you to start thinking about is: do you believe this model?

我想让你们应该考虑下,你相信这个模型吗

耶鲁公开课 - 博弈论课程节选

At any rate, I don't know for certainty that I'm a harder grader, but I believe that it's the case based on reactions I get when I give the speech that I'm about to give.

不管怎么，虽然不是特确定我评分严格，但相信应该就是这样,根据我每次说这些话时得到的反应来说。

耶鲁公开课 - 死亡课程节选