一个好的抽象是捕捉概念的本质方面，同时忽略无关的细节。

The healthy social life is found when in the mirror of each human soul the whole community finds its reflection, and when in the community the virtue of each one is living.

We say of some things that they can't be forgiven, or that we will never forgive ourselves. But we do—we do it all the time.

真理并不总是美丽的，美丽的话语也不总是真理。

Art should disturb the comfortable and comfort the disturbed.

The defining characteristic of pessimists is that they tend to believe bad events will last a long time, will undermine everything they do, and are their own fault.

预测未来最可靠的方法是理解现在。

Precision measurements in astronomy open new windows to understanding the universe.