善可以存在于没有恶的情况下，而恶无法在没有善的情况下存在。

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 world is changed by your example, not by your opinion."

When you are young spend at least 6 months to one year living as poor as you can， owning as little as you possibly can， eating beans and rice in a tiny room or tent， to experience what your “worst” lifestyle might be. That way any time you have to risk something in the future you won’t be afraid of the worst case scenario.