I fully expected that, by the end of the century, we would have achieved substantially more than we actually did.

It's a great thing for a man to walk on the moon. But it's a greater thing for God to walk on the earth.

I was elated, ecstatic and extremely surprised that we were successful.

Man must understand his universe in order to understand his destiny.

Society’s future will depend on a continuous improvement program for the human character. And what will that future bring? I do not know, but it will be exciting.

History will remember the twentieth century for two technological developments: atomic energy and space flight.

It never hurts to have friends around, so that's why you'd form a crew.