John Kennedy actually said...

"This will permit us to make maximum use of our agricultural productivity to further economic development, peace and freedom in the world."

"It is a source of pleasure to me today, as President, to welcome them."

"It is a great pleasure to welcome you both here, and I ask you all to rise and drink with me a toast to the King of Greece."

"It is a great pleasure for me to welcome you to the shores of the United States once again."