——致书蒋介石，1920年10月29日

世界上充满了故事，但那些留在我们心中的，是那些触及我们最深恐惧和渴望的故事。

农民的智慧常常超越最新技术——我们必须学会倾听。

"The world is a prison, and language is the key."

科学的精确性既需要严谨，也需要创造力。

"The world is full of obvious things which nobody by any chance ever observes."

With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.

The trouble with her is that she lacks the power of conversation but not the power of speech.

言语有治愈和毁灭的力量。