And in 1961, during the Cold War with the Soviet Union, John Kennedy urged people to take an active part in the future: "And so, my fellow Americans, ask not what your country can do for you - ask what you can do for your country.

VOA: special.2009.01.19

And so what I'm really doing is inviting you to take a good, cold, hard look at death, and to face it and think about it in a way that most of us don't do.

那就是我要你们做的，认清，死亡的好和坏，面对它，然后思考它,用我们从没用过的方式。

耶鲁公开课 - 死亡课程节选

Take a perspective of the cold virus.

从感冒病毒的角度看。

耶鲁公开课 - 心理学导论课程节选