And that got me to think gosh, these people have so little and I was a student, and I didn't have a lot of money, but I still had something to spare.

看到这张照片，我想,天啊，这些人太贫困了,虽然我是个学生，我没有很多钱，但我还是能够捐出些什么的。

普林斯顿公开课 - 人性课程节选

But as you get older and you have a lot of spare time, you think about what you are doing, which is something I have the luxury of doing right now, and I realized this is more tricky.

但随着你们年龄的增长,有更多空闲时间之后,你就会思考你做的事情,我现在就有很多闲暇思考这些问题,我意识到这东西其实很精妙

耶鲁公开课 - 基础物理课程节选