John Kennedy actually said...

"I believe there are two basic responsibilities which the next President of the United States must meet."

"Where can they get a government, a President, a Congress, which will be responsible, progressive, which will strengthen the United States, strengthen our influence around the world, strike a blow for ..."

"Any setbacks in our prestige should naturally affect our thinking as well - our choice of policies - our choice of leadership."

"This is a contest between the concerned and the comfortable, and you have to decide what you are, comfortable or concerned."