People who are unable to motivate themselves must be content with mediocrity, no matter how impressive their other talents.
The superior man thinks only of virtue; the common man thinks only of comfort.
To succeed in your mission, you must have single-minded devotion to your goal.
The unexamined life is not worth living.
Why live an ordinary life, when you can live an extraordinary one.
You can't learn in school what the world is going to do next year.
A man should look for what is, and not what he thinks should be.
What I stand for is what I stand on.
No great discovery was ever made without a bold guess.
You need a little bit of insanity to do great things.
A thing worth having is a thing worth cheating for.
To go too far is as bad as to fall short.
I don't care what people think or say about me, I know who I am.
If you can accept losing, you can't win.
Learn from yesterday, live for today, hope for tomorrow.
Keep your face to the sunshine and you will never see the shadow.
If you can dream it, you can do it.
Keep your face always toward the sunshine - and shadows will fall behind you.
Everything you can imagine is real.
We should not give up and we should not allow the problem to defeat us.
Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young.