科学的进步依赖于挑战未知的勇气和从失败中学习的智慧。

成功的真正标准是你对他人的影响。

The essence of causal inference is to go beyond the data and ask what would happen if we intervene.

The ultimate test of any economic theory is whether it improves real-world decisions.

我们都被过去的幽灵所困扰。