"Science has not yet mastered prophecy. We predict too much for the next year and yet far too little for the next 10."

"There are places in the universe that we can't even imagine."

"I put my thumb up and I could hide the whole Earth behind my thumb. I felt like a little tiny speck in this vast universe."

"The only way to reach the moon is to keep your eye on the stars."

"We were not just going to the moon, we were going to the moon for all mankind."