人类是一种非常奇特的生物。

不确定性不是信息的缺失，而是过多矛盾信息的存在。

They just keep trotting back and forth across the bridge thinking there is something better on the other side. If they'd hang head down at the top of the thing and wait quietly, maybe something good would come along. But no—with men it's rush, rush, rush, every minute. I'm glad I'm a sedentary spider.

Success is not final, failure is not fatal: it is the courage to continue that counts.