If we were to start today on an organized and well-supported space program I believe a practical passenger rocket can be built and tested within ten years.

All one can really leave one's children is what's inside their heads. Education, in other words, and not earthly possessions, is the ultimate legacy, the only thing that cannot be taken away.

Our sun is one of a 100 billion stars in our galaxy. Our galaxy is one of billions of galaxies populating the universe. It would be the height of presumption to think that we are the only living thing in that enormous immensity.

We can lick gravity, but sometimes the paperwork is overwhelming.

What we will have attained when Neil Armstrong steps down upon the moon is a completely new step in the evolution of man.

Everybody knows what the moon is, everybody knows what this decade is, and everybody can tell a live astronaut who returned from the moon from one who didn't

My experiences with science led me to God. They challenge science to prove the existence of God. But must we really light a candle to see the sun?