The biggest risk is not taking one.

大脑只是一大堆技巧的集合。

Institutional discrimination shapes destinies more than individual effort.

要理解一个人，你必须先理解他们的沉默。

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.