"I'm not interested in living in a world without space travel."

"Our future is in space, and it's up to us to make it happen."

"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."

"I am a firm believer in the power of the human spirit."

"The greatest gain from space travel is the opportunity to see the Earth from a distance."