我的作品不是要让人看懂，而是要让人感受到。

强者，藐视困难，弱者，仰视困难。

我们不要从模型开始。我们要从数据开始。我们没有任何先入为主的观念。我们寻找那些可以重复数千次的东西。收敛性交易的问题是，你没有时间尺度。你说最终都会收敛。好的，那何时是最终呢？

A good mechanic is not merely a man who files and hammers, but one who can originate and perfect.

I always wanted to be somebody. If I made it, it's half luck and half talent, and a lot of hard work.

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！"