我们活着就是为了改变世界，否则还有什么意义？

To catch a husband is an art; to hold him is a job.

学习不仅仅是知识的积累，而是理解的转变。

Now, I am not going to stand here and tell you that failure is fun. That period of my life was a dark one, and I had no idea that there was going to be what the press has since represented as a kind of fairy tale resolution. I had no idea then how far the tunnel extended, and for a long time, any light at the end of it was a hope rather than a reality.

数学的本质在于它的自由。