John Kennedy actually said...

"But I believe that we are an advancing society, and I believe that we are on the rise, and I believe that their system is as old as time."

"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."

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

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