身份不是被给予的，而是被构建的。

追求数学知识是一场永无止境的冒险，充满了挑战、惊喜和解决不可解问题的满足感。

将一副人生烂牌打得风生水起、妙趣横生，别管它到底是什么意思。

The present state of the system of nature is evidently a consequence of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.

Never a failure, always a lesson.

有时最意想不到的发现会带来最大的进步。

每一天都是改变生活的新机会。