I've been the longest-serving police commissioner in the history of the department, but it's time in my life to move on. I'm ready for new adventures, new challenges.

A broad base of knowledge is critically important to our ability to investigate terrorism.

Good news is not news. Bad news sells. Confrontation sells. And that's what the press is always looking for. I'm not bragging, but I have the highest job-approval rating of any public official in the city. And I've had it consistently. The approval rating for the police department is 70 percent. This notion that stop-and-frisk has torn the community apart is false.

If you go into any department store these days, your picture is probably taken 30 times. In London there are 500,000 cameras in public spaces. You have no expectation of privacy in public spaces.

New York is safer than it has been - and it's getting safer. But it's never safe. As the financial and communications capital of the world, this is where terrorists want to make a statement, where they get the most bang for the buck.

I never think of the word legacy. It doesn't mean anything. You do the right thing, in my judgment, and things will work out. That's what drives me. I'm not looking for legacy or history books or whatever. I know what we've done here has saved a significant number of lives. The burden is not on me. It's on the politicians who made the decisions to limit what we're doing. They're the ones who are going to pay a price, in my judgment, if crime significantly increases.

No other agency is scrutinized like the police. Everything we do is in a goldfish bowl. We are not the most popular people in society. We do things like use deadly force; we're the bearers of bad news. We're not firefighters, who are viewed as heroic, helping people, with people loving them back. The police have a much more complex and demanding job.