任何白痴都能面对危机；磨损人的是日复一日的生活。

你唯一需要超越的人，是昨天的自己。

The historian must be impartial, but not indifferent.

The uniform， constant， and uninterrupted effort of every man to better his condition， the principle from which public and national as well as private opulence is originally derived.

对未知的恐惧是一切智慧的开始。