To succeed in your mission, you must have single-minded devotion to your goal.

If you spend too much time thinking about a thing, you'll never get it done.

Don't complain about the snow on your neighbor's roof when your own doorstep is unclean.

Only the wisest and stupidest of men never change.

Be yourself, let you come through.

He was a dreamer, a thinker, a speculative philosopher... or, as his wife would have it, an idiot.

Waste no more time arguing about what a good man should be. Be one.

Somewhere, something incredible is waiting to be known.

Nothing great was ever achieved without enthusiasm.

Take things as they are. Punch when you have to punch. Kick when you have to kick.

I am not what happened to me, I am what I choose to become.

Never tell all you know-not even to the person you know best.

Listen to many, speak to a few.

With realization of one's own potential and self-confidence in one's ability, one can build a better world.

The starting point of all achievement is desire. Keep this constantly in mind. Weak desires bring weak results, just as a small amount of fire makes a small amount of heat.

You're never as good as everyone tells you when you win, and you're never as bad as they say when you lose.

If the only tool you have is a hammer, you tend to see every problem as a nail.

I do not want to die rusting, I prefer to burn out.

The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.

The secret of health for both mind and body is not to mourn for the past, nor to worry about the future, but to live the present moment wisely and earnestly.

The superior man thinks only of virtue; the common man thinks only of comfort.