陌生人是群体本身的一个元素，与穷人和各种“内部敌人”并无不同——一个在群体中的成员身份既涉及在其外部又涉及面对它的元素。

世界充满了诗意。空气中弥漫着它的精神；波浪随着它的旋律舞动，在它的光辉中闪耀。

We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.

竹简和丝帛文献的研究为了解中国古代文明打开了一扇新的窗口。

The best way to cheer yourself up is to try to cheer somebody else up.

戏剧是向观众提出的一个问题。

The study of attention provides a window into how the brain selects, integrates, and acts upon information.