John F. Kennedy — "The supreme reality of our time is this: the threat of nuclear war."

"Ask not what your country can do for you—ask what you can do for your country."

"We need men who are not afraid to dream, to imagine, and to create."

"Let us begin anew—remembering on both sides that civility is not a sign of weakness, and sincerity is always subject to proof. Let us never negotiate out of fear. But let us never fear to negotiate."

"I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the Moon and returning him safely to the Earth. No single space project in this pe…"

"Those who make peaceful revolution impossible will make violent revolution inevitable."