Living is like tearing through a museum. Not until later do you really start absorbing what you saw, thinking about it, looking it up in a book, and remembering - because you can’t take it in all at once.

The language of mathematics is universal, transcending cultural and linguistic barriers.

林业的创新不仅仅是技术，更是思维方式的转变。

The study of mathematics is like air or gravity – it’s everywhere, even if you don’t see it.

Freedom is a heavy load, a great and strange burden for the spirit to undertake.