Look, we live in a very dangerous world. We know there are people who want to take away our freedoms. New Yorkers probably know that as much if not more than anybody else after the terrible tragedy of 9/11.

And if I were the president, I'd go out there and I'd emphasize the things I have done, and I'd say, 'Some things haven't worked, and I'm sorry about that, but I keep trying.' And I'm - and I think the president is a very viable candidate, and you're going to have a real horse race here no matter who the Republican nominee is.

You can't sit there and worry about everything.

I'm trying to change the culture in New York City; that's hard enough!

My personal view is, why don't you get out there and try to do something about the things that you don't like, create the jobs that we are lacking, rather than just yell and scream. But if you want to yell and scream, we'll make sure you can do it.

We haven't had a world war in a long time. We do have mass movements of people out of Syria and North Africa. But, fundamentally, if you take Japan, you're complaining that the economy isn't booming, they'd like to have slightly higher inflation.

If you think of all the publicity about the terrible tragedy of Virginia Tech, we have a Virginia Tech in this country every day. It's just spread across 50 states.