The public is mad, frustrated, but what the public wants is progress.

There are lots of threats to you in the world. There's the threat of a heart attack for genetic reasons. You can't sit there and worry about everything. Get a life.

The one thing computers have done is let us make bigger mistakes. We have to be careful not to depend on our machines.

We may not always agree with every one of our neighbors. That's life. And it's part of living in such a diverse and dense city. But we also recognize that part of being a New Yorker is living with your neighbors in mutual respect and tolerance. It was exactly that spirit of openness and acceptance that was attacked on 9/11, 2001.

Design does matter. And not necessarily in a way that people realize. A lot of what you do, people take for granted - that a park has always been here, that a bicycle lane has always been there, that the street is safe or clean.

The truth of the matter is: you can create a great legacy, and inspire others, by giving it to philanthropic organizations.

We've continued progress in the six months since Trump got elected, and the good thing about what we're doing is that success begets success. As we bring down greenhouse gases, for example, we've closed half of the coal-fired power plants in the country in recent years. There's more impetus to try to close the other half because you can see that it is working. So, you know, I had hoped that Trump would not do that, and it doesn't make any sense to me, but regardless, it is not as cataclysmic as it could be.