We need never be ashamed of our tears.

The man with no imagination has no wings.

I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion'.

Why live an ordinary life, when you can live an extraordinary one.

Drink moderately, for drunkenness neither keeps a secret nor observes a promise.

Somewhere, something incredible is waiting to be known.

Great work requires great and persistent effort for a long time. … Character has to be established through a thousand stumbles.

The deeds you do may be the only sermon some persons will hear today.

I want to know what passion is. I want to feel something strongly.

A man may die, nations may rise and fall, but an idea lives on.

Lend yourself to others, but give yourself to yourself.

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

You are not here merely to make a living. You are here in order to enable the world to live more amply, with greater vision, with a finer spirit of hope and achievement. You are here to enrich the world, and to impoverish yourself if you forget the errand.

It's always too early to quit.

The secret to creativity is knowing how to hide your sources.

When it comes down to it, I let them think what they want. If they care enough to bother with what I do, then I'm already better than them.

I'd rather be an optimist and a fool than a pessimist and right.

Life is entrusted to man as a treasure which must not be squandered, as a talent which must be used well.

We cannot do everything at once, but we can do something at once.

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

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.