在最低阶层中保存知识的手段对公众来说比国家中所有富人的所有财产都更重要。
The preservation of the means of knowledge among the lowest ranks is of more importance to the public than all the property of all the rich men in the country.
Nature is a book, and each species is a chapter, each species is a story.
大萧条是20世纪历史上的一个决定性时刻，理解其原因和后果仍然是经济学家的一项重要任务。
The mind is a mosaic of elementary processes.
"We are all fools in love."