模形式的算术是理解数论更深奥谜团的关键。

 金钱都是一种信仰问题。

I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

你爱得越多，你就能爱得越多——而且你爱得越强烈。