"I aim for the stars, but sometimes I hit London."

"The Earth is too small for our ambitions."

"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."

"We are standing on the threshold of a new era of space travel."

"A good scientist is a man with an original mind who can think straight, but who also has a practical sense of what is possible."