Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

To attain the impossible, one must attempt the absurd.

A man is but the product of his thoughts. What he thinks, he becomes.

Know thyself.

Fantasy is an exercise bicycle for the mind. It might not take you anywhere, but it tones up the muscles that can. Of course, I could be wrong.

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

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

There is no refuge from confession but suicide; and suicide is confession.

The limits of the possible can only be defined by going beyond them into the impossible.

Learn from yesterday, live for today, hope for tomorrow.

There is always room at the top.

If you want creative workers, give them enough time to play.

Become a possibilitarian. No matter how dark things seem to be or actually are, raise your sights and see possibilities -- always see them, for they're always there.

When you're at the end of your rope, tie a knot and hold on

Aim for the highest.

If you fell down yesterday, stand up today.

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

It's always too early to quit.

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

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

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