I've gone through a series of such arguments, and the one that we ended with last time was the suggestion that we need to believe in the existence of a soul in order to explain the fact that we've got free will.

我已经讲过一系列这样的论证,上次课结束时我提到的一个论证认为,我们只有相信灵魂存在,才能解释我们拥有自由意志这一事实

耶鲁公开课 - 死亡课程节选