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.

科学中的每一个发现都是建立在我们之前无数人工作的基础上。

预测未来的最好方式就是创造未来

"To write is to confront the unknown within ourselves."