Every mathematical problem has a solution; the challenge is finding it.

The human being cannot live in a condition of emptiness for very long: if he is not growing toward something, he does not merely stagnate; the pent-up potentialities turn into morbidity and despair, and eventually into destructive activities.

算法不应该决定内容的价值，人的判断才是核心。

书籍是最安静、最恒久的朋友；它们是最易接近、最睿智的顾问，也是最耐心的老师。

真正的进步发生在我们敢于质疑现状之时。