年轻人不知道足够谨慎，因此他们尝试不可能的事情，并一代又一代地实现它。

Ah, my Beloved, fill the Cup that clears TO-DAY of past Regrets and future Fears: To-morrow!—Why, To-morrow I may be Myself with Yesterday's Sev'n thousand Years.

The best stories are those that leave something to the imagination.

Leadership means making tough choices today for a better tomorrow.

科学的力量在于它的普遍性和无私性，它超越了国界和文化的限制。