True leadership is not about exercising power but about empowering others to achieve their potential.

The photograph is the most perfect picture.

The only way to survive is to keep moving forward.

适应，反应，再适应，行动。

I think it's important to stay grounded and remember where you came from.

我们曾许下这样的诺言：不作恶。我要让我的公司去做对用户、对顾客、对所有人有利的事情。所以，如果我们能坚守这个诺言，我们就能做出一番有益的成就。

Natural experiments are a powerful tool for understanding causal relationships in the real world.

Always strive for excellence, not perfection.