解析：告诫人们要珍惜所得。

不幸而又值得期待的事情是，你的人生是不会有必修课程的，全部都是选修。

永远不要低估一个执行得非常好的简单想法的力量。

What I remember above all about Harvard was being in the midst of so much energy and intelligence. It could be exhilarating, intimidating, sometimes even discouraging, but always challenging. It was an amazing privilege…and though I left early, I was transformed by my years at Harvard, the friendships I made, and the ideas I worked on.

我并非一无所有，我拥有自由。