Fisher says his experiences in Africa years ago showed him many people value the things they pay for more than the things they're given.

VOA: standard.2010.08.09

And the history of human rights ; for some people's gonna start thousands of years ago; And for many people was going to start in the Enlightenment.

人权的历史,对一些人来说几千年前就开始了;,而对很多人而言则是在启蒙运动时发端。

普林斯顿公开课 - 人性课程节选

Here, the relevant thought experiment was suggested by Robert Nozick, a philosopher who died a few years ago, taught for many years at Harvard.

相关的思维实验,由Robert，Nozick提出，一位几年前，过世的哲学家，他曾在哈佛从教多年。

耶鲁公开课 - 死亡课程节选