When a professor insists computer science is X but not Y, have compassion for his graduate students.

You see, but you do not observe.

It’s not the having, it’s the getting.

I've always been a private person.

优化是在给定约束条件下做出最佳选择的艺术。

在科学中最令人兴奋的短语，预示着新发现的，不是“我发现了！”，而是“这有点奇怪……”

Life is an art, and each of us is the artist of our own life.