"To be a great champion, you must believe you are the best. If you're not, pretend you are."

"Silence is golden when you can't think of a good answer."

"The man who views the world at 50 the same as he did at 20 has wasted 30 years of his life."

"I’m not the greatest, I'm the double greatest. Not only do I knock 'em out, I pick the round."

"I'm not against any man, any woman, any child, any religion. I'm for all of them."