高效算法的开发既是一门艺术，也是一门科学。

It requires indeed some courage to undertake a labor of such far-reaching extent.

你周围被你称为生活的一切，都是由不比你我聪明的人创造的。

"In the end, we will remember not the words of our enemies, but the silence of our friends."

The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.

世界不会记住你说过什么，但会记住你做过什么。