At the end of the day, better that five should live even if one must die.

最终结论：，牺牲一人保全五人，是更好的选择。

耶鲁公开课 - 公正课程节选

It's a tragic circumstance but better to kill one so that five can live, is that the reason most of you had, those of you who would turn? Yes?

虽然是悲剧,但牺牲一人保全五人依然是更正确的选择，这就是大多数人选择把电车开上侧轨的理由吗？

耶鲁公开课 - 公正课程节选

If you imagined a choice between this one gene that makes the animal choose to die and the other gene that makes an animal choose for its brothers to die, the gene that sacrifices the body it belongs to will make more copies in the future.

如果你想象做一个选择,一个基因让动物选择死亡,另一个基因让动物,选择为它的兄弟死亡，自我牺牲的基因,将来会复制更多自己。

耶鲁公开课 - 心理学导论课程节选

And I mean, at a certain point, you have to make a decision and I'm sorry for the minority but sometimes, it's for the general, for the greater good.

有时，你必须做出选择,我对少数表示遗憾,但有时，这是牺牲小我，成全大我。

耶鲁公开课 - 公正课程节选

Well I was thinking it's the same reason on 9/11 with regard to the people who flew the plane into the Pennsylvania field as heroes because they chose to kill the people on the plane and not kill more people in big buildings.

我认为这和9·11的时候是一种情况1,那些让飞机在宾州坠毁的人，被视为英雄,因为他们选择了牺牲自己,而不是让飞机撞向大楼牺牲更多人。

耶鲁公开课 - 公正课程节选