你是自己生活的艺术家。

在经济学中，就像在生活中一样，答案往往比最初看起来更加微妙。

The true discovery of America is before us. The true fulfillment of our spirit, of our people, of our mighty and immortal land, is yet to come.

剑鞘保护剑的锋利，自己却满足於它自己的迟钝。

The most important thing is to keep your mind active.

开玩笑是件严肃的事情。