"The space program is a catalyst for progress."

"My mind is completely open. I don't know if there is life on other planets, but I think it's likely."

"I'm not interested in war, I'm interested in rockets."

"The universe is an open book, and we are just learning to read it."

"We knew that we had created a new means of warfare, and the question as to what to do with it was a moral problem for the world, not for us."