And this was a tube at low pressure.

这是一根低压条件下的试管。

麻省理工公开课 - 固态化学导论课程节选

What makes it true that the person lecturing to you next Tuesday is Shelly Kagan, the very same person, what makes that true is that it's the very same soul.

那个下星期二给你讲课的,还是谢利·凯根,和现在是同一个人，所需要的条件是,有同一个灵魂。

耶鲁公开课 - 死亡课程节选