"Don't tell me that man doesn't belong out there. Man belongs wherever he wants to go — and he'll do plenty well when he gets there."

"It is not a question of whether man will fly to the moon but when."

"I have never seen a rocket that didn't want to fly."

"I am not a warmonger. I am a space enthusiast."

"It would be the height of presumption to think that we are the only living things in that enormous immensity."