数学不是一项观赏性运动；要理解它，必须积极参与其中。

I'm not a role model... Just because I can sing doesn't mean I should raise your kids.

在计算复杂性的研究中，我们常常发现可能的边界是由我们想象力的极限定义的。

What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.

We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil.

The best thing about a boolean is even if you are wrong, you are only off by a bit.

操办丧事，虽然礼仪繁多，但表达哀悼之情，才是最根本的。