You guys probably know that too from your days at the daycare, but I want to derive the formula and put it up, then we'll see how to use it.

你们可能从幼儿园起就已经知道这个式子了,但是我想重新推导一遍,再来看如何进行运用

耶鲁公开课 - 基础物理课程节选

You make a life plan, what you want to accomplish in your life, and well, obviously enough, some of us will die too soon, not just in terms of, "oh, well, life still could've had good things," but too soon in terms of you didn't get where you wanted to get in terms of your life plan.

比如你订了一个一生的计划，写下你一生想实现的事情，显而易见我们中有些人会死得太早，死得太早并不是说，生活还有美好的事情“,死得太早是因为,你还没有实现你的人生计划。

耶鲁公开课 - 死亡课程节选