"A little consideration, a little thought for others, makes all the difference. Wisdom that transcends age, delivered with a smile."

"Some of us learn from other people's mistakes and the rest of us have to be other people."

"I am the greatest thing that ever lived! I don't have a mark on my face, and I upset Sonny Liston."

"I'll beat him so bad he'll need a shoehorn to put his hat on."

"I believed in myself, and I believe in the goodness of others."

"I never thought of losing, but now that it's happened, the only thing is to do it right. That's my obligation to all the people who believe in me."

"Life is a gamble. You can get hurt, but people die in plane crashes, lose their arms and legs in car accidents; people die everyday."

"Bragging is when a person says something and can't do it. I do what I say."

"Impossible is just a big word thrown around by small men who find it easier to live in the world they've been given than to explore the power they have to change it."

"Service to others is the rent you pay for your room here on earth."

"I would like to die on Mars. Just not on impact."

"Many a true word hath been spoken in jest."

"Better a witty fool than a foolish wit."

"Science is a wonderful thing if one does not have to earn one's living at it."

"In order to form an immaculate member of a flock of sheep one must, above all, be a sheep."