The historian is a prophet in reverse.

I went to the woods because I wanted to live deliberately,I wanted to live deep and suck out all the marrow of life, To put to rout all that was not life, and not when I had come to die, Discover that I had not lived.

我从不回头看，我向前看。

The past is a place of reference, not a place of residence.

Mathematics is the most beautiful and most powerful creation of the human spirit.

I believe in the power of storytelling to change the world.

In mathematics, there are no shortcuts.

The greatest untapped resource in the global economy is the full participation of women.