Harry Truman actually said...

"I think this great Nation has only begun to be great."

"I have only one ambition, and that is to get a peace in the world that will be lasting, that will work, and that will keep this country prosperous for generations to come."

"Thank you a lot for your appearance and for your welcome, and I appreciate it most highly, and I hope some time I can come back and talk politics to you."

"There is not any reason in the world why these plans should not be carried out, and if we can get the cooperation of every branch of the Federal Government, we can get that done."