There is no greater agony than bearing an untold story inside you.

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

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

It's not what you look at that matters, it's what you see.

If you don't like the road you're walking, start paving another one.

You need a little bit of insanity to do great things.

It's all to do with the training: you can do a lot if you're properly trained.

Scar tissue is stronger than regular tissue. Realize the strength, move on.

Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.

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

Differences are not intended to separate, to alienate. We are different precisely in order to realize our need of one another.

We should not give up and we should not allow the problem to defeat us.

No leader can be too far ahead of his followers.

The marble not yet carved can hold the form of every thought the greatest artist has.

My mission in life is not merely to survive, but to thrive; and to do so with some passion, some compassion, some humor, and some style

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

March on. Do not tarry. To go forward is to move toward perfection. March on, and fear not the thorns, or the sharp stones on life's path.

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

I'm not telling you it's going to be easy - I'm telling you it's going to be worth it.

I don’t think we are going to become extinct. We are very clever and very resourceful.

It is better to light one small candle than to curse the darkness.