Writing is a way of discovering what you think, of exploring the world and your place in it.
"The act of writing is an act of freedom."
城市部落被高估了。
成功辨识的关键是找到一个足够灵活的模型结构，以捕捉系统的基本特征，同时又足够简单，可以从现有数据中估计出来。
The artist's job is to make the invisible visible.
当我们把上帝放在第一位时，所有其他事情都会归于其适当的位置或从我们的生活中消失。
Natural experiments can provide valuable insights into economic questions.
The truth is, I don't know where my ideas come from. What I do know is that they come when I'm not trying to think of them.