It doesn't change from the day you were born to the day you die-- or so they thought.

从出生到死亡时都不会改变-,或者说他们这样认为。

哈佛公开课 - 幸福课课程节选

But that doesn't mean that every part of my body existed before I was born, and that every part of my body will continue to exist after I die.

但是这并不意味着,组成我身体的所有部件都是先于我的存在,并不是每一个部件,都会在我死后依然存在

耶鲁公开课 - 死亡课程节选