China is investing in factories in Eastern Europe, not because their labor costs are lower, but because they want to be closer to their markets.

I'm worried about the world because there's chaos in the Middle East, and I think the Iranian deal [to lift sanctions] is going to continue the Shia-Sunni battles, the Persian-Arab battles.

The World Trade Center site will forever hold a special place in our city, in our hearts. But we would be untrue to the best part of ourselves and who we are as New Yorkers and Americans if we said no to a mosque in lower Manhattan.

You can buy almost anything anyplace in the world. You can get it delivered in 24 hours. You can pay for it on credit or just by swiping something. So, I don't know that the world is worse off, in that context, than before.

The mistake that was made in the '70s is we stopped policing the streets, we stopped cleaning the streets, we stopped cleaning the graffiti off buildings, we stopped supporting our cultural institutions and building parks and schools and all those kinds of things.

Entrepreneurship is having an idea to do something great and not entirely have a plan on how to do it but the drive and will power to make it work

You're going to see a million people here who have the courage to come and not let terrorists win, and that's exactly what we should all do.