记忆是个奇怪的东西。它不像我以为的那样运作。它不是可以重播的电影。它更像是一个你讲给自己的故事，而每次讲述这个故事都会改变。

我一直相信，如果你陷入困境，也许事情进展不顺利，你会变得更强大。

Difficult circumstances serve as a textbook of life for people.

We don't own the land, we borrow it from our children.

Virtue consists， not in abstaining from vice， but in not desiring it.

I think that the thing that makes mathematics worthwhile is the fact that it has this incredible structure that you can explore and discover.

I'm not a preacher and I'm not a teacher. I'm just a singer.