"I was at the USA House the other day talking to somebody about our student group, and I went on after our discussion, and then he came back and he came over and shook my hand and said how impressed he was with what we were doing."

VOA: standard.2010.02.26

I sometimes come away after this discussion thinking, Why am I wasting our time?

我经常在讨论的最后想，我为何浪费时间呢？

耶鲁公开课 - 死亡课程节选