数学推理可以相当系统地看作是对两种能力的结合运用，我们可以称之为直觉和独创性。

I declare after all there is no enjoyment like reading! How much sooner one tires of anything than of a book!

一个伟大的故事是那种在你读完很久之后仍陪伴着你的故事。

In business, the ability to adapt quickly to market changes is more valuable than any static advantage.

A novel is a mirror that reflects not only the world but also the reader's soul.

理解问题是解决问题的一半。

At that age， I'd take any excuse to make estimates and do minor arithmetic. I'd calculate our gas mileage -- figure out useless statistics on things like grocery spending. I'd been hearing an ad campaign about smoking. I can't remember the details， but basically the ad said， every puff of a cigarette takes some number of minutes off of your life: I think it might have been two minutes per puff. At any rate， I decided to do the math for my grandmother. I estimated the number of cigarettes per days， estimated the number of puffs per cigarette and so on. When I was satisfied that I'd come up with a reasonable number， I poked my head into the front of the car， tapped my grandmother on the shoulder， and proudly proclaimed， "At two minutes per puff， you've taken nine years off your life！"