In this age of space flight, when we use the modern tools of science to advance into new regions of human activity, the Bible... remains in every way an up-to-date book. Our knowledge and use of the laws of nature that enable us to fly to the Moon also enable us to destroy our home planet with the atom bomb. Science itself does not address the question whether we should use the power at our disposal for good or for evil. The guidelines of what we ought to do are furnished in the moral law of God.

It is in scientific honesty that I endorse the presentation of alternative theories for the origin of the universe, life and man in the science classroom. It would be an error to overlook the possibility that the universe was planned rather than happening by chance.

Crash programs fail because they are based on theory that, with nine women pregnant, you can get a baby in a month.

There are flying grandfathers. But I intend to be an orbiting grandfather.

I'm convinced that before the year 2000 is over, the first child will have been born on the moon.

If we continue at this leisurly pace, we will have to pass Russian customs when we land on the moon.

The greatest gain from space travel consists in the extension of our knowledge. In a hundred years this newly won knowledge will pay huge and unexpected dividends.