We should not give up and we should not allow the problem to defeat us.
Perseverance is failing 19 times and succeeding the 20th.
Be happy, but never satisfied.
I can be changed by what happens to me. But I refuse to be reduced by it.
One person with a belief is equal to a force of ninety-nine who have only interests.
A long apprenticeship is the most logical way to success. The only alternative is overnight stardom, but I can't give you a formula for that.
The fact that the great scientist believed in flying machines was the one thing that encouraged us to begin our studies.
All the darkness in the world cannot extinguish the light of a single candle.
Life is like riding a bicycle. To keep your balance, you must keep moving.
Laziness is nothing more than the habit of resting before you get tired.
We are what we repeatedly do. Excellence, then, is not an act, but a habit.
The great art of life is sensation, to feel that we exist, even in pain.
Impossible is a word to be found only in the dictionary of fools.
People throw stones at you and you convert them into milestones.
If you can dream it, you can do it. Always remember that this whole thing was started with a dream and a mouse.
The first rule is to keep an untroubled spirit. The second is to look things in the face and know them for what they are.
You say I started out with practically nothing, but that isn't correct. We all start with all there is, it's how we use it that makes things possible.
No one is free who has not obtained the empire of himself. No man is free who cannot command himself.
The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.
You're never as good as everyone tells you when you win, and you're never as bad as they say when you lose.
He who is not courageous enough to take risks will accomplish nothing in life