John Kennedy actually said...

"The office of the Presidency is key, and whoever may be the next President, whether it is Mr. Nixon or myself, will be faced with greater responsibilities and greater burdens."

"The next 5 years are going to be decisive years in the life of our country."

"The United States is moving into a period which will feature great opportunities for us as well as great responsibilities and great burdens."

"My belief is that Mr. Nixon runs for the office of the Presidency without emphasizing in his campaign, either because he is not informed or because he does not believe that this is the most serious ti..."