"One cannot be timid when one works with liquid oxygen."

"The future of humanity lies in space."

"We knew that we had created a new means of warfare, and the question as to what nation, to what victorious nation we were willing to entrust this brainchild of ours was a moral decision more than anyt…"

"The guidelines of what we ought to do are furnished in the moral law of God. It is no longer enough that we pray that God may be with us on our side. We must learn again that we may be on God's side."

"It is not a question of whether we will go to Mars, but when."