电流概念的形成是电学理论发展中最重要的步骤。
我们无法选择时代，但我们可以选择如何回应它。
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."
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.
The goal is not to build more, but to build better.