领导者应该具备战略眼光和宽广的世界观，以应对复杂的国际挑战。
你无法改变自己是谁，只能改变自己做什么。
In chemistry, as in life, the most transformative reactions often require patience and precise conditions.
人经常被真相困扰。但是大多数人装作没看见就走了。
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！"
了解贫困的最佳方式是走出去，与穷人交谈。