Alvin E. Roth

The simple model of a bridge is great, and you could not build a bridge without understanding it well. But if you're actually building the bridge, you need to know the site. A lot of economics is like that: When prices go up, demand is gonna go down. You can't forget that and run your economy. But it's not the only thing you need to know.

My opportunity to design school choice systems began in 2003 with a phone call from Jeremy Lack at the New York City Department of Education. He knew of my work on the medical match and wondered if similar efforts might help reorganize the dysfunctional, congested system then used to match students to high schools.

Socialism has no moral justification whatsoever; poor people are not morally superior to rich people, nor are they owed anything by rich people simply because of their lack of success. Charity is not a socialist concept - it is a religious one, an acknowledgment of God's sovereignty over property, a sovereignty the Left utterly rejects.

I'd say Harvard graduates leave here with a sense of the possible and the limit - and a sense that there are no limits to what humans can do and that you can always be pushing, whatever limit you think might be there.

I don't think even when you find a person, you can be completely honest, ever. There's still pieces of you that you don't give away. I do believe you always need that place where it's just you, your thoughts, no one else's judgment or anything.