最激动人心的发现往往来自于以全新的方式看待老问题。

What is most personal is most universal.

I strongly believe that missionaries make better products. They care more. For a missionary， it's not just about the business. There has to be a business， and the business has to make sense， but that's not why you do it. You do it because you have something meaningful that motivates you.

心理学家必须是一个冷静的观察者。