Duty does not require any person to submit to the destruction of his personal ambitions and the right to live his own life in his own way.

Identify your problems but give your power and energy to solutions

People don't realize how a man's whole life can be changed by one book.

Do not pray for easy lives. Pray to be stronger men.

Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently. You can practice any virtue erratically, but nothing consistently without courage.

To attain the impossible, one must attempt the absurd.

I would prefer even to fail with honor than win by cheating.

My optimism wears heavy boots and is loud.

I think nature's imagination Is so much greater than man's, she's never going to let us relax.

Life isn't about finding yourself. Life is about creating yourself.

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

Insanity is doing the same thing over and over again and expecting different results.

I just want to be able to play and make people feel good with what I do. When you're thinking that way, anything can happen. And, usually, what happens is good.

I don't think necessity is the mother of invention. Invention ... arises directly from idleness, possibly also from laziness. To save oneself trouble.

You lose nothing when fighting for a cause ... In my mind the losers are those who don't have a cause they care about.

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

You are never too old to become younger!

You shape your own destiny.

You can't learn in school what the world is going to do next year.

We are what we repeatedly do. Excellence, then, is not an act, but a habit.

Always remember you are braver than you believe, stronger than you seem, smarter than you think and twice as beautiful as you’ve ever imagined.