True scientific progress is achieved not by mere accumulation of facts, but by the continuous refinement of theories and models.

我不是专业的摄影师，我是专业的观察者。

It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.

In business, the ability to adapt quickly to market changes is more valuable than any static advantage.

Every role I take on is a piece of me, and I leave a piece of me in every role.