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！"

从事物的本质来看，权力必须制约权力。

数据库的未来在云端。

下一次绿色革命必须是高产且对环境负责的。

最伟大的故事是那些让我们感觉不那么孤独的故事。

In the future, people will no longer be alienated by their labor, but by their leisure.

伟大的公司建立在组织内外良好关系的基础上。