对抗压力的最大武器是我们选择一种思想而不是另一种思想的能力。

发现中总有意外惊喜。

War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.

人的精神是世界上最宝贵的东西。