我们做过价格弹性研究，答案总是我们应该提高价格。我们不这样做，因为我们相信--我们必须把这当作信仰的一篇文章--通过长期保持我们的价格非常非常低，我们会随着时间的推移赢得客户的信任，实际上这会在长期内最大化自由现金流。
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.
在数学的世界里，想象力比知识更重要。
神经系统是一个动态的、不断变化的系统。
释义：天地阴阳不交接，是阻塞之象。君子以节俭为德而避开危难，不可追求荣华而谋取禄位。