We can't answer that question until we are clearer about what does it take to have identity across time.

我们无法回答那个问题,除非我们知道,人格要穿越时间需要什么条件。

耶鲁公开课 - 死亡课程节选

As time increases, the angle increases and we can ask, "How long does it take for the particle to come back to the starting point?"

这个角度随着时间在增加,我们会问,"质点需要多长时间,才能转到起点"

耶鲁公开课 - 基础物理课程节选

And so, what we'd like to know is what does it take for two person stages to make up or be part of the very same extended-through-time person?

所以我们要知道,两个人生阶段,要成为同一个贯穿空间的人的,一部分，需要什么条件？

耶鲁公开课 - 死亡课程节选

Well, you can't adopt the policy of "I'm going to wait for this pig to dance " and when it does I'm going to reinforce it" because it's going to take you a very long time.

那么，你就不能说,“我要等这头猪跳舞,然后再对它进行强化“,因为这会花掉你很长的时间。

耶鲁公开课 - 心理学导论课程节选