Lyndon Johnson actually said...

"I know of no task before us of more importance to us, to the country, or to our future."

"I am deeply grateful for your willingness to accept this tremendous responsibility."

"So, I want to salute you, General Greene, in the Nation's name, for a job that has been honorably done, favorably done, and faithfully done--and I guess in your language 'well done.'"

"We shall continue to use every means available to find a prompt and a peaceful solution to the problem."