I intend to work with President [Donald] Trump on those issues where he will, in fact, work for the middle class and working families in this country. I will vigorously oppose him if he appeals to racism or sexism.

Here's why nuclear defense makes sense. And I know something about this. A missile can take an airplane out of the air. A better missile can take a missile out of the air.

Being mayor of New York was a crisis a week and an emergency every other day.

I see a comparison between the two [Ronald Reagan and Donald Trump]. Peace through strength. What Chris Matthews don't grasp is that day Donald Trump gave a speech in which he said he's going to build the U.S. military up to Ronald Reagan levels.

The reality is you've got to be yourself. You've got to be who you are. You've got to be honest with people. If your views change on something, you've got to be willing to express it.

This guy [Donald Trump] is not going to get pushed around.

He changed his position on virtually everything. I'm a moderate Republican, that's what I am, so I'd be inclined to support someone like Mitt Romney. But all those changes give me pause.