Lyndon Johnson actually said...

"That is a most revolutionary concept in the history of man."

"We shall be a responsible people."

"I say this in the full knowledge that he has in the past felt that a number of my proposals were less than divinely inspired--a habit that I am afraid he will retain no matter how many nice things I m..."

"But we have not yet seen that we can keep our air and our water pure and healthy while we do it."