If you go back a few hundred years, what we take for granted today would seem like magic—being able to talk to people over long distances, to transmit images, flying, accessing vast amounts of data like an oracle. These are all things that would have been considered magic a few hundred years ago.

The challenge of computer science is not just to build faster machines, but to understand the very fabric of computational possibility.

在物理学中，近似的艺术往往比精确解更重要。

唯一能战胜厄运的是努力工作。

In a state, the liberty of one citizen is a menace to the others.