The people who are crazy enough to think they can change the world are the ones who do.

The art of doing mathematics consists in finding that special case which contains all the germs of generality.

"生活就像一本书，每一页都充满了未知的故事。"

The sole meaning of life is to serve humanity.

"The essence of mathematics lies in its freedom."

可持续林业不仅仅是砍伐树木；它关乎我们星球的未来。