I don’t think we are going to become extinct. We are very clever and very resourceful.

I believe that if you show people the problems and you show them the solutions they will be moved to act.

You say I started out with practically nothing, but that isn't correct. We all start with all there is, it's how we use it that makes things possible.

Once you learn to quit, it becomes a habit.

The greatest thing in the world is to know how to belong to oneself.

Whatever the mind of man can conceive and believe, it can achieve.

Any book that helps a child to form a habit of reading, to make reading one of his deep and continuing needs, is good for him.

Employ your time in improving yourself by other men's writings so that you shall come easily by what others have labored hard for.

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.

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

Courage is the thing. All goes if courage goes.

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

I can never stand still. I must explore and experiment. I am never satisfied with my work. I resent the limitations of my own imagination.

Wealth is not about having a lot of money; it's about having a lot of options.

You shape your own destiny.

If we want a free and peaceful world, if we want to make the deserts bloom and man grow to greater dignity as a human being-we can do it.

Don't find fault, find a remedy; anybody can complain

Weakness of attitude becomes weakness of character.

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

Great spirits have always encountered violent opposition from mediocre minds.

Champions aren't made in the gyms. Champions are made from something they have deep inside them - a desire, a dream, a vision.