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！"

投资者应该意识到，市场并不总是以传统模型预测的方式回报风险。

计算机中最重要的东西是操作系统。

"The number one benefit of information technology is that it empowers people to do what they want to do."

The world is full of obvious things which nobody by any chance ever observes.

I don't know what I'm doing, and that's the way I like it.

The more constraints you have, the more creative you become.

Never underestimate the power of a small, dedicated team to change the world.

We're not gonna give you no breakup song