I'm in my prime. There's no goal too far, no mountain too high.

Never underestimate the power of dreams and the influence of the human spirit. We are all the same in this notion: The potential for greatness lives within each of us.

'I can't' are two words that have never been in my vocabulary. I believe in me more than anything in this world.

Winning is great, sure, but if you are really going to do something in life, the secret is learning how to lose.

When the sun is shining I can do anything; no mountain is too high, no trouble too difficult to overcome.

My doctor told me I would never walk again. My mother told me I would. I believed my mother.

I loved the feeling of freedom in running, the fresh air, the feeling that the only person I'm competing with is me.

No matter what great things you accomplish, somebody helps you.

The potential for greatness lives within us all.

Believe me, the reward is not so great without the struggle.

I ran and ran and ran every day, and I acquired this sense of determination, this sense of spirit that I would never, never give up, no matter what else happened.

Furious activity is no substitute for analytical thought.

If you have easy self-contentment, you might have a very, very cheap source of happiness.

Sincerity and competence is a strong combination. In politics, it is everything.

People are willing to work free, and they are willing to work for a reasonable wage; but offer them just a small payment and they will walk away.

If you don’t sign up your kids for cryonics then you are a lousy parent.

I counted solely on the clarity of expression of my work to gain my ends.

I know enough about Satan to realize that he will have all his weapons ready for determined opposition. He would be a missionary simpleton who expected plain sailing in any work of God.

The search for extra-terrestrial life is a failure until that moment when it suddenly becomes a success.

I don't like technology and all that. I'm a farm boy. I would rather live in that time when you had to provide for your family. I don't know. I'm a country kid, so I don't like modern technology.