When every physical and mental resource is focused, one's power to solve a problem multiplies tremendously.

What's the world's greatest lie?... It's this: that at a certain point in our lives, we lose control of what's happening to us, and our lives become controlled by fate.

The world is the great gymnasium where we come to make ourselves strong.

My advice to other disabled people would be, concentrate on things your disability doesn't prevent you doing well, and don't regret the things it interferes with. Don't be disabled in spirit as well as physically.

People throw stones at you and you convert them into milestones.

Change the way you look at things and the things you look at change.

Take things as they are. Punch when you have to punch. Kick when you have to kick.

Climbing to the top demands strength, whether it is to the top of Mount Everest or to the top of your career.

Freedom and independence form my character.

When I was in college, I wanted to be involved in things that would change the world.

I confess that in 1901 I said to my brother Orville that man would not fly for fifty years.

The people who were trying to make this world worse are not taking the day off. Why should I?

Question with boldness even the existence of God; because, if there be one, he must more approve of the homage of reason than that of blindfolded fear.

I don't know who my grandfather was; I'm much more concerned to know what his grandson will be.

Don't fear failure. Not failure, but low aim, is the crime. In great attempts it is glorious even to fail.

Everything you can imagine is real.

I can be changed by what happens to me. But I refuse to be reduced by it.

Sovereignty is not given, it is taken.

Do not worry about holding high position; worry rather about playing your proper role.

You can't build a reputation on what you are going to do.

People who are unable to motivate themselves must be content with mediocrity, no matter how impressive their other talents.