分析的整个发展和运算过程现在都可以通过机械来执行。

有些人即使没有存心做坏事，可事实上事情仍会做错，引起不幸的后果。凡是粗心大意、看不出别人的好心好意，而且缺乏果断的人，都一样能害人。

Being powerful is like being a lady. If you have to tell people you are, you aren't.

The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.

对于那些感受的人来说，世界是一场悲剧，但对于那些思考的人来说，世界是一场喜剧。