The problem of power is how to achieve its responsible use rather than its irresponsible and indulgent use; of how to get men of power to live for the public rather than off the public.

Whatever one's religion in his private life may be, for the officeholder, nothing takes precedence over his oath to uphold the Constitution and all its parts - including the First Amendment and the strict separation of church and state.

Unless liberty flourishes in all lands, it cannot flourish in one.

With all of the history of war, and the human race's history unfortunately has been a good deal more war than peace, with nuclear weapons distributed all through the world, and available, and the strong reluctance of any people to accept defeat, I see the possibility in the 1970's of the President of the United States having to face a world in which 15 or 20 or 25 nations may have these weapons.

History is a relentless master. It has no present, only the past rushing into the future. To try to hold fast is to be swept aside.

Politics is like football; if you see daylight, go through the hole.

We set sail on this new sea because there is new knowledge to be gained, and new rights to be won, and they must be won and used for the progress of all people. For space science, like nuclear science and technology, has no conscience of its own. Whether it will become a force for good or ill depends on man, and only if the United States occupies a position of preeminence can we help decide whether this new ocean will be a sea of peace or a new terrifying theater of war.