Travel changes you. As you move through this life and this world you change things slightly， you leave marks behind， however small. And in return， life—and travel—leaves marks on you.

The challenge of modern cryptography is not just to protect information, but to do so in a way that is both efficient and scalable.

Reading is not a movement of the eyes; it’s a movement of the mind.

The most important political development of the modern era is the rise of the modern state.

在催化中，有时最小的修改可以带来最大的突破。

"The great advantage of being a writer is that you can spy on people. You're there, listening to every word, but part of you is observing. Everything is useful to a writer, every scrap, even the longest and most boring of luncheon parties."

We can say things with words； and we can do things with words.