预测未来的最好方式就是创造未来。
The best way to predict the future is to create it.
数学中最重要的是理解概念，而不仅仅是记忆公式。
One strategy: "We've had three big ideas at Amazon that we've stuck with for 18 years， and they're the reason we're successful: Put the customer first. Invent. And be patient."