数学中发现的快乐就像解开宇宙留给我们的谜题。

And I hope you will come back here to Harvard 30 years from now and reflect on what you have done with your talent and your energy. I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities…on how well you treated people a world away who have nothing in common with you but their humanity.

Free competition is the great means of increasing the efficiency and prosperity of the economic system.

"Every book is a mirror, and every reader sees a different reflection."

我不是生命，我是死亡。

尝试过，失败过。没关系，再尝试。再失败，失败也是一种进步！