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！"

我们不是在做产品，我们是在做服务。

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

I'm focused on what I can control. I can't control what people say about me.

I like being a woman, even in a man's world. After all, men can't wear dresses, but we can wear the pants.

The future of petrochemicals lies in high-value, low-carbon products.

数学语言是通用的；它超越了所有文化障碍。

The dead speak to us through the molecules they left behind.