虽然在一切的成长物中，爱情看上去是最快的，究其实却最迟缓。男男女女没有一个人晓得什么是十全十潜的爱，除非一直到他们结婚了二十五年之后。

You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program.

To live is to be constantly learning.

The language of mathematics is universal, transcending cultural and linguistic barriers.

The more you give, the more you get.