Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

好与卓越的区别在于对细节的关注。

Memory is not just personal, it's collective. We remember through others and others remember through us.

书籍是最好的老师。

那些愿意为了安全而放弃自由的人，既得不到安全，也得不到自由。

过去总是紧张，未来才是完美。