I've been waiting more than 30 years to say this: "Dad, I always told you I'd come back and get my degree." I want to thank Harvard for this timely honor. I'll be changing my job next year…and it will be nice to finally have a college degree on my resume.

I try to create buildings that are like chameleons, changing with their surroundings.

世界是一面镜子，它反映出我们选择看到的东西。

一个观念的效用决定了它在精神生活中的地位。

Immigration has a much smaller effect on native wages than most people believe.