.. We've done a lot-- I shouldn't say we haven't done anything-- but we can do a lot more.

我们做了很多-,我不该说我们什么都没做-,但是我们可以本做得更好。

耶鲁公开课 - 金融市场课程节选

And from there, I go to... saying well, what can we do in terms of global poverty?

由此，我想到，我们可以为全球的贫困问题做些什么呢？

普林斯顿公开课 - 人性课程节选

Because doing that allows me to explain why people get sick.

因为那样做我就可以解释人为什么会生病

耶鲁公开课 - 死亡课程节选