The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

我不是为观众打球，我是为自己打球。

如果你想理解功能，就去研究结构。

书是作者与读者之间的对话。

建筑是创造有意义场所的艺术。

The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.

We must balance immediate energy needs with long-term sustainability goals.