I was the one of those students who made the top half of the class possible.

The system [in U.S.] is designed for a two-party system. And those two parties have an interest in keeping third parties out. There's too much of the structure that works in the two-party way. They will keep the third party out.

Nobody's going to go home for a year and come back. Nobody could ever enforce that. Nobody in their right mind would ever try to do it.

What has changed is that people have stopped working together.

We're America, and we have to stop worrying about what happens overseas, and to be optimistic, even though nobody should think we're not going to have some difficult times.

Cities with clean air gain an economic advantage, because where people want to live and work, businesses want to invest.

Our climate is changing. And while the increase in extreme weather we have experienced in New York City and around the world may or may not be the result of it, the risk that it may be - given the devastation it is wreaking - should be enough to compel all elected leaders to take immediate action.