Success is not final, failure is not fatal: it is the courage to continue that counts.

The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.

文章的最高境界，能够通达神明，穷尽天地之理，放之四海而皆准，流传百世而不衰。

A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

学者学习古人，开始时接触到的是粗浅的内容，中期接触到精华，最终领悟到其神妙变化。

In mathematics, the most profound ideas often arise from the simplest observations.

推进计算机科学的关键是跨学科的合作。

We must be vigilant in protecting the Internet from those who would misuse it.

你的星星无法闪烁是因为我。