All of my films have been very hard to understand at the script stage because they're very different. At the time I did them they were not conventional. The executives could only think in terms of what they'd already seen. It's hard for them to think in terms of what has never been done before.

For 'Star Wars' I had to develop a whole new idea about special effects to give it the kind of kinetic energy I was looking for. I did it with motion-control photography.

Today it is an amazing, if unexpected, legacy of Star Wars that so many gifted writers are contributing new stories to the Saga.

Luminous beings are we, not this crude matter.

When Star Wars became a hit and I had a chance to make the other movies, I had to figure out a way to bring Ben back, but a lot of the issues he had to deal with were carried by Yoda. In a sense, I combined Yoda with the spirit of Ben. I wanted Ben to have some kind of influence, but I didn't want it to be a direct influence where he could help Luke. So Ben has managed to keep his identity after he became one with the Force. One of the things he was doing on Tatooine besides watching over Luke was learning how to keep his identity after he became part of the Force.

The script is what you`ve dreamed up - this is what it should be. The film is what you end up with.

There are a lot of movies that are badly made that I love, and there are a lot of movies that are just beautifully made but I don't like them. And critics have a tendency - that's all they focus on, which is, "I like it. I don't like it. It's good. It's bad."