John Kennedy actually said...

"This kind of joint community effort, the community of free nations, would have been regarded as impossible 2 decades ago, but now we take it very much for granted."

"You're here on a most important mission, and that is one which is greatly identified with the traditional and present and future aspirations of free men and women."

"I want to express our great satisfaction in your presence here in the United States."

"We're confident that you will teach us as much as you will learn."