What I’m doing right now, I’m chasing perfection.

Architecture is not about the end product, it's about the process of making.

Profitability and sustainability must go hand in hand, or neither will last.

教育的主要目标是培养能够创新的人，而不仅仅是重复前人所做的事情。

We've done price elasticity studies, and the answer is always that we should raise prices. We don't do that, because we believe -- and we have to take this as an article of faith -- that by keeping our prices very, very low, we earn trust with customers over time, and that that actually does maximize free cash flow over the long term.

"The world is a shadow, and the shadow is a game."

我不害怕失败。我不害怕冒险。