The conjectures of the Langlands program are a challenge to the next generation of mathematicians.
The limits of sense are not to be determined by the narrow bounds of our own capacities.
每一本书都是一次旅程,每一页都是踏入未知的一步。
自由是在法律允许范围内做任何事的权利。
Reading good literature is the best way to learn to be free.
Envy is the ulcer of the soul.