Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently. You can practice any virtue erratically, but nothing consistently without courage.

Sovereignty is not given, it is taken.

It's the possibility of having a dream come true that makes life interesting.

Isn't it astonishing that all these secrets have been preserved for so many years just so we could discover them!

People should pursue what they're passionate about. That will make them happier than pretty much anything else.

Be happy, but never satisfied.

Neither worse then or better is a thing made by being praised.

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

If my mind can conceive it, and my heart can believe it - then I can achieve it.

I know in my heart that man is good, that what is right will always eventually triumph, and there is purpose and worth to each and every life.

Yesterday is gone. Tomorrow has not yet come. We have only today. Let us begin.

If you can dream it, you can do it.

Some people regard discipline as a chore. For me, it is a kind of order that sets me free to fly.

If you fell down yesterday, stand up today.

Always do what you are afraid to do.

I can never stand still. I must explore and experiment. I am never satisfied with my work. I resent the limitations of my own imagination.

Plan your work - work your plan. Lack of system produces that 'I'm swamped' feeling.

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.

Wanting to be someone else is a waste of who you are

Out of your vulnerabilities will come your strength.

There is nothing in a caterpillar that tells you it's going to be a butterfly.