The question isn't who is going to let me; it's who is going to stop me.

Focus on where you want to go, not on what you fear.

If you can't fly then run, if you can't run then walk, if you can't walk then crawl, but whatever you do you have to keep moving forward.

A liar will not be believed even when he speaks the truth.

Go on with what your heart tells you, or you will lose all.

The duty of youth is to challenge corruption.

Make the most of yourself....for that is all there is of you.

I not only use all the brains that I have, but all that I can borrow.

Be yourself, let you come through.

The fact that the great scientist believed in flying machines was the one thing that encouraged us to begin our studies.

Life is like riding a bicycle. To keep your balance, you must keep moving.

I believe that every person is born with talent.

A man should look for what is, and not what he thinks should be.

We all have possibilities we don't know about. We can do things we don't even dream we can do.

Never trust the advice of a man in difficulties.

Only those are fit to live who do not fear to die; and none are fit to die who have shrunk from the joy of life and the duty of life. Both life and death are parts of the same Great Adventure.

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

Only when I fall do I get up again.

Keep your face always toward the sunshine - and shadows will fall behind you.

When written in Chinese, the word 'crisis' is composed of two characters. One represents danger, the other opportunity.

You can wish for things in the future to be different, but in this moment you have to accept things as they are.