一流智力的检验标准是同时持有两种相反的观点，并且仍然能够正常运作。

抱最好的希望，做最坏的打算。

儿童并非弱者，他们有足够的智慧。

A company’s culture is defined by the decisions its leaders make when no one is watching.

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！"

I’m not a legend, I’m a living proof.

不曾有过一个女儿这样爱过他的父亲，也不曾有一个父亲这样被他女儿爱。