我们对过去了解得越多，就越能理解现在。

Man can only be free through mastery of himself.

Optimists tend to interpret their troubles as transient, controllable, and specific to one situation. Pessimists, on the other hand, believe that their troubles last forever, undermine everything they do, and are uncontrollable.

我想一整天都做自己喜欢的事情，我想坐在路边的咖啡馆，看商店橱窗里的东西。在雨中漫步，做一些好玩甚至有些刺激的事。

避免错误的唯一方法就是没有新想法。

War is the province of danger and therefore courage above all things is the first quality of a warrior.

无论你打算做什么，现在就做。条件总是不可能的。

The historian’s task is to bring the dead to life.

最终，我们记住的不是敌人的话语，而是朋友的沉默。

优秀的数学家不是知道所有答案的人，而是能提出正确问题的人。