John Kennedy actually said...
This group of young men and women, who represent a good many others, by working to secure the 500,000 signatures, which represents a tremendous labor, from the people of Costa Rica, committing them to the success of the Alliance for Progress, to the success of our common cause, I think gives me the greatest possible encouragement that, particularly in the students, Costa Rica, and in the other free countries of the hemisphere, that we are producing the kind of dedicated freedom fighters who can outwork the Communists and in the final analysis bring success to our cause.
Context
Remarks at the Ambassador's Residence, San Jose, in Response to a Welcoming Declaration by Christian Democratic Youth
03/19/1963