数学的研究是所有智力和精神进步不可或缺的基础。

He knew that the world was made for men and that men were made to look at it.

Happiness lies in the joy of achievement and the thrill of creative effort.

A man of genius makes no mistakes. His errors are volitional and are the portals of discovery.

Let them see that their words can cut you and you'll never be free of the mockery. If they want to give you a name take it, make it your own. Then they can't hurt you with it anymore.

I don't like to label myself. I just like to be me.

Hope is not a feeling; it is a doable, dramatic action.

"The world is a book, and those who do not travel read only one page."