Harry Truman actually said...

"If we make this peace what these young men who died believed it would be, they will not have died in vain."

"We are working heroically and manfully for world peace that will be permanent and that will be lasting."

"Look forward to the future as the greatest that the world has ever faced."

"We can't let that happen again, and if I have anything to do with it, it won't happen again!"