Democracy is the worst form of government except for all those other forms that have been tried from time to time.
民主是最糟糕的政府形式,除了所有其他时不时被尝试过的形式。
A mind needs books as a sword needs a whetstone if it is to keep its edge.
生活对智者是一场梦,对愚者是一场游戏,对富人是一场喜剧,对穷人是一场悲剧。
如果没有地幔对流的概念,大陆漂移理论将只是一种猜测。
年轻人是可怕的,因为怎么能知道他的将来不如我们现在呢?但如果一个人到了四十、五十岁还默默无闻,他也就没有什么可怕的了。
仅仅观察、实验、理论化和计算是不够的。人们还必须想象。