I urge individuals around the world to stand up, and ask local leaders, if they haven't already, to pledge to purchase cleaner cars, build green facilities, and buy green power like wind or solar energy. Our actions may determine if we become a casualty in the war for a habitable planet for generations to come.

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.

I think it's much more interesting when people say, "I love being famous. I love the attention and getting laid and having people I respect admire me," than when they pretend it hasn't had an effect on them.

Yes, I can play younger than my age. But I can play characters older than I am, too. I'm not an actor who can just play the kid.

I spent a long time in art school so I can really draw. I'll doodle and suddenly I'll find the beginning of the movie in one picture. Usually, I start my stuff on the telephone. Right by the telephone I've got a book of doodles. When I'm on the phone, I'll be doing a drawing eventually.

I'm never really conscious of saying, "I'm going to take on a specific role to combat a certain image in the public eye." I think that's pretty manipulative and transparent to the public anyway.

I've just got to maintain my passion for what I do.