It's about the four-dollar cup of coffee that we have three times a day, because we need to keep the feel going.

可能只是节省一杯4美元的咖啡,我们每天要喝三次咖啡，只是为了留住这种感觉。

普林斯顿公开课 - 人性课程节选

If you make three people-- or even better, four people a day feel good and they make-- they pay it forward and make four others feel good, and so on and so on.

如果你能让三个人-,甚至四个人度过美妙的一天-,他们会推展，让四人有美好的一天，以此类推。

哈佛公开课 - 幸福课课程节选

We give you six questions. And we will ask you on the day of the final to respond to three of those--our choice, it would be hardly sporting if you got to pick the three.

给你六个问题,等考试那天,让你回答三个问题,我们挑,要是让你们挑就真没什么技术含量了

耶鲁公开课 - 1871年后的法国课程节选