Doing what we do [filming], you have to be your own critic and judge and adjudicate as to what you do and how it turned out.

A single idea from the human mind can build cities. An idea can transform the world and rewrite all the rules.

You learn after you've been in the business for a while that it's not getting your face recognized that's the payoff. It's having your film remembered.

(Acting) certainly comes-100 percent-from the need to be loved. Any actor who says this isn't true is lying.

Since I was very young I've been fascinated with nature and I actually wanted to be a marine biologist when I was very young. That was a great passion of mine. So I suppose in the off season when I'm not making movies, I became more and more active as an environmentalist trying to be more vocal about issues that I felt were important.

It was invaluable to have a dear friend who you have known for over a decade, be a partner in a film like Titanic. To have somebody that talented to work against, who's also your friend and who you know you have the best intentions for and vice versa, and who you intrinsically trust to give you their forthright honest opinion about what we're both doing - all that's something you can't really buy.

At some point in your career, someone is going to tell you, "This stove is hot. Do not touch this stove." And the weird thing is, you'll want to touch it. But resist that urge, man.