The only way to learn mathematics is to do mathematics.

The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

"The world is full of stories, but the stories are all one."

成功不是终点，失败也非致命，重要的是继续前进的勇气。

In the world of computing, the boundary between the possible and the impossible is often defined by the algorithms we can devise.

通往地狱的路是由善意铺成的。