文章的难以精工，就像器物的难以制成一样。

"The past is never dead. It's not even past."

分发奖赏的人不要怀有私恩，行使惩罚权力的人也不要带有私怨。

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.