实证研究者最重要的技能不是数学，而是判断力。
The most important skill for an empirical researcher is not math, but judgment.
Sometimes the simplest designs are the most robust.
Investing in employee development is investing in the future of the company.
The only true happiness comes from squandering ourselves for a purpose.
失败不可怕，可怕的是不敢尝试。