Collecting facts is important. Knowledge is important. But if you don't have an imagination to use the knowledge, civilization is nowhere.

I'm never going to go to Mars, but I've helped inspire, thank goodness, the people who built the rockets and sent our photographic equipment off to Mars.

If you dream the proper dreams, and share the myths with people, they will want to grow up to be like you.

If we listened to our intellect, we'd never have a love affair. We'd never have a friendship. We'd never go into business, because we'd be cynical. Well, that's nonsense. You've got to jump off cliffs all the time and build your wings on the way down.

When I graduated from high school, it was during the Depression and we had no money.

I know you've heard it a thousand times before. But it's true - hard work pays off. If you want to be good, you have to practice, practice, practice. If you don't love something, then don't do it.

My religion encompasses all religions. I believe in God, I believe in the universe. I believe you are god, I believe I am god; I believe the earth is god and the universe is god. We're all god.

I spent three days a week for 10 years educating myself in the public library, and it's better than college. People should educate themselves - you can get a complete education for no money. At the end of 10 years, I had read every book in the library and I'd written a thousand stories.

The best scientist is open to experience and begins with romance - the idea that anything is possible.

We've gotta become the Martians. I'm a Martian - I tell you to become Martians. And we've gotta go to Mars and civilize Mars and build a whole civilization on Mars and then move out, 300 years from now into the universe. And when we do that, we have a chance of living forever.

Living at risk is jumping off the cliff and building your wings on the way down.

Without libraries what have we? We have no past and no future.

Love. Fall in love and stay in love. Write only what you love, and love what you write. The key word is love. You have to get up in the morning and write something you love, something to live for.

We've gotta reinvest in space travel. We should've never left the moon.

Science fiction is any idea that occurs in the head and doesn't exist yet, but soon will, and will change everything for everybody, and nothing will ever be the same again. As soon as you have an idea that changes some small part of the world you are writing science fiction. It is always the art of the possible, never the impossible.

Love. Fall in love and stay in love. Write only what you love, and love what you write. The key word is love. You have to get up in the morning and write something you love, something to live for.

Jump, and you will find out how to unfold your wings as you fall.