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！"

写作是一种生活方式，一种存在于世界的方式。

计算的未来在于硬件和软件的无缝集成。

Life is too short to waste time on things that don't make you happy.

始终使用止损单。

每种心理状态都是大脑某种物理状态的功能。

当时若不是去登高望远，后来怎知东海的浩瀚。