"Starring in a science-fiction film doesn't mean you have to act science fiction."

"My approach to acting is the 'let's pretend' school of acting."

"I think of myself as an assistant storyteller."

"I retire every time I'm done with a movie. Then I go back. You know, I enjoy sleep. But I love to work; it's fun for me. As long as it continues to be fun, and I'm tolerated by the people around me, I will do it."

"I'm not a poster boy for Conservation International. I'm a working member of the board."

"I don't do celebrity endorsements. My work with Conservation International is a good use of whatever celebrity I might have to draw attention to important problems. I have the same responsibility as everyone to reduce consumption and to teach children to respect the environment."

"I think retirement's for old people. I'm still in the business, thank you. I have a young child of nine years old, and I want to live as long as I can to see him grow up. I'm enjoying my life and I want to stick around for as long as I can."

"I love the comic opportunities that come up in the context of a father-son relationship."

"It's very little trouble for me to accommodate my fans, unless I'm actually taking a pee at the time."

"Parenting is an impossible job at any age."

"The original 'Star Wars' that I was a part of really was the beginning of my working life."

"My character is meant to know nothing about rap, and not to like it very much, but I know about it, because my kids make me listen to it. There's some rap I do like very much. I like Eminem, Blackalicious."

"Peace is not the absence of war but the presence of justice."

"I think 'Indiana Jones' was a lot of fun to do because of the places we went to and the adventures and the action. But Han Solo was also a huge part of my life."

"I don't think I've mastered anything. I'm still wrestling with the same frustrations, the same issues, the same problems as I always did. That's what life is like."

"Nature doesn't need people - people need nature; nature would survive the extinction of the human being and go on just fine, but human culture, human beings, cannot survive without nature."

"You keep on going until you get it as close to being right as the time and patience of others will allow."

"We're all interconnected. For example, a simple lack of fresh water can lead to population dislocation, which can lead to political radicalization, which can lead to great pressure on the states that receive refugees because of a migrating population."

"I had a very strong feeling about the Vietnam War, and I had a strong feeling about participating in it. The military draft was in place, I was summoned for a physical exam, and I was either going to be classified as fit for military service or make my objection to it. So I made my objection to it."

"The kindest word to describe my performance in school was Sloth."

"I am Irish as a person, but I feel Jewish as an actor."

"I fly myself everywhere. I like all kinds of flying, including practical flying for search and rescue. And I also like to fly into the backcountry, usually the Frank Church Wilderness in Idaho. I go with a group of friends, and we set up camp for about five days and explore little dirt strips and canyons."

"I went down to Venezuela and ended up renting a helicopter and flew with my sons to the tops of the tepuis, these freestanding jungle mesas, 'lost worlds' as it were. In fact, it's almost impossible to access them without one. So we were able to land and spend some time there. We were trapped for about six hours by clouds that came in."

"Am I grumpy? I might be. But I think maybe sometimes it's misinterpreted."