数据抽象是将特定数据集简化为整体的简化表示。

The best way to understand a program is to try to change it.

It's not about money. It's about the ability to make things happen.

The office of President is great, but the man who holds it is not.

"The mind is its own place, and in itself can make a heaven of hell, a hell of heaven."

只有当人能够察看自己的内心深处时，他的视野才会变得清晰起来。向外看的人是在梦中、向内看的人是清醒的人。

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.

我们必须挑战现状，并不断寻求更好的做事方式。