Film is such a powerful medium. It can really affect change; you can affect so many different people in different ways.

The advice I give to every filmmaker is you have to be tenacious. You can't give up.

I think that there are certain guns that, of course, I don't know who needs a machine gun, personally. But I think rifles and things like that are fine. I think that in the wrong hand is when a gun becomes a problem.

One of my beliefs as a filmmaker is that if you can make somebody laugh, you can make them listen. With laughter, you can get somebody's guard down, you can open them up to listening to you. They don't feel like they're being preached to or talked down to. I think it helps, it makes really hard to understand information a little more accessible and palatable. And at the end of the day, it makes a movie a little more fun. It doesn't feel so heavy handed.

To strip yourself from a lot of the things around you that make you comfortable is a really challenging thing that most of us don't do or don't get a chance to do.

I was walking an average of about two and a half miles a day, which is still more than most Americans. Most Americans don't even walk that.

One Direction's 3D movie has more shirtless moments than you can imagine