The meaning of a word is its use in the language.

"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."

预测未来的最好方式就是创造未来。

挑战在于使不可见的东西变得可见。

All things excellent are as difficult as they are rare.

The study of Shimura varieties is a testament to the unity of mathematics.