I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.

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.

分布式系统是指一个系统中，即使是你不知道存在的计算机发生故障，也可能导致你自己的计算机无法使用。

不要因为它结束了而哭泣，要因为它发生过而微笑。