Writing is a way of making the invisible visible.

最好的领导者是那些最感兴趣于让比自己更聪明的助手和同事围绕在自己身边的人。

你不能因为某件事困难就放弃。

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

Twenty years from now, you will be more disappointed by the things you didn’t do than the ones you did.So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover. （注：这句说话被部分人质疑不是由马克·吐温所说的。）

数学的本质在于它的自由。