But it was Darwin who identified and explained the process, natural selection, that causes life to evolve.

VOA: special.2009.02.25

We're continuing to evolve not just as a human rights concept but certainly as nations and our ethical understandings of what is appropriate.

我们在发展，不单单是人权的观念,我们的国家，道德观念,都在向前发展。

普林斯顿公开课 - 人性课程节选

This is all by means of review but the question you can now ask is, "Fine. That's why moral feelings might evolve, but what do we know as psychologists about the emergence in nature of moral feelings in individuals?

这些知识我们以前都学过,现在你们要问一个问题，“好了，道德情感是这样产生的，但我们心理学家知不知道,自然界中的个体的道德情感是如何出现的？

耶鲁公开课 - 心理学导论课程节选