Free vaccines are more valuable than expensive treatments, yet harder to promote.
免费的疫苗比昂贵的治疗更有价值,但更难推广。
The only way to tell the truth is to speak without a mouth.
统计学领域不仅是分析数据的工具,也是一种思考世界的方式。
When you are stuck, sleep on it. Let your subconscious work for you.