世界是一本书，不旅行的人只读了一页。

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.

I’ve learned over the years that the market is always right.

对付不自由世界的唯一方法就是变得如此绝对自由，以至于你的存在本身就是一种反叛。