文章的最高境界，能够通达神明，穷尽天地，变化古今，而不可更改。

To feel much for others and little for ourselves； to restrain our selfishness and exercise our benevolent affections， constitute the perfection of human nature.

"In business, you don't get what you deserve, you get what you negotiate."

Change your conception of yourself and you will change your world.

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.

Even in abstraction, mathematics has profound real-world applications.