Jane Ziegelman says from the nineteenth century on, immigrants would take difficult jobs that non-immigrants would not do.

VOA: special.2010.08.25

All of us need some money, but some people really enjoy doing work that may not generate, if it's non-profit work like what we do.

我们都需要一些钱，但有些人,是真的乐于从事平凡的工作，比如说像我们做的这种不会发财的工作。

普林斯顿公开课 - 人性课程节选

"That non-coding RNA, well,what does it do? Well,it's not that it's going to make a protein."

VOA: standard.2010.04.05