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The world is not a problem to be solved, but a mystery to be lived.

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.

Life is about growth and change. When you stop growing, you stop living.

數學的歷史是人類思想和進步的歷史。

解釋：對社會有用的，創作百篇也沒有害處；對社會無用的，寫一章也沒有好處。