Freedom from the desire for an answer is essential to the understanding of a problem.

Live as if you were to die tomorrow. Learn as if you were to live forever.

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.

I hope our wisdom will grow with our power, and teach us that the less we use our power the greater it will be.

You are never too old to become younger!

I invented my life by taking for granted that everything I did not like would have an opposite, which I would like.

Man needs his difficulties because they are necessary to enjoy success.

All thinking men are atheists.

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

Find out who you are. And do it on purpose.

A lot of legends, a lot of people, have come before me. But this is my time.

Work gives you meaning and purpose and life is empty without it.

You can chain me, you can torture me, you can even destroy this body, but you will never imprison my mind.

The fact that the great scientist believed in flying machines was the one thing that encouraged us to begin our studies.

If you're not prepared to be wrong, you'll never come up with anything original.

Today I shall behave, as if this is the day I will be remembered.

First they ignore you, then they ridicule you, then they fight you, and then you win.

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

My dear friend, clear your mind of cant.

If you can't feed a hundred people, then just feed one.

How long should you try? Until.