If evolution wired us up simply to survive, then it's a puzzle why animals would relate positively to other animals.

如果进化仅让我们生存，那么这是个谜题,为什么动物之间确定有联系。

耶鲁公开课 - 心理学导论课程节选

And it's evolved due to survival and reproduction.

它通过生存和繁衍进化。

耶鲁公开课 - 心理学导论课程节选