“There's an old saying in Tennessee — I know it's in Texas, probably in Tennessee — that says, fool me once, shame on — shame on you. Fool me — you can't get fooled again.”

“You can fool some of the people all the time, and those are the ones you want to concentrate on.”

“There is a huge trust. I see it all the time when people come up to me and say, 'I don't want you to let me down again.' - Boston, Mass., Oct. 3, 2000”

“I fully understand those who say you can't win this thing militarily. That's exactly what the United States military says, that you can't win this military.”

“fool me once, shame on you. fool me twice, shame on me.”

“fool me once shame on you, fool me twice shame on me.”

“Now, like, I’m President. It would be pretty hard for some drug guy to come into the White House and start offering it up, you know? I bet if they did, I hope I would say, ‘Hey, get lost. We don’t want any of that.”