Jonas Salk

Life is not a problem to be solved, but a reality to be experienced.

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

To live is to suffer, to survive is to find some meaning in the suffering.

The journey of a thousand miles begins with a single step.

Do not go where the path may lead, go instead where there is no path and leave a trail.

The human spirit must prevail over technology.

It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is most adaptable to change.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

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

The price of anything is the amount of life you exchange for it.

Man is condemned to be free; because once thrown into the world, he is responsible for everything he does.

The meaning of life is to find your gift. The purpose of life is to give it away.

To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.

The only true voyage of discovery consists not in seeking new landscapes, but in having new eyes.

Everything has its beauty, but not everyone sees it.

Life is a series of natural and spontaneous changes. Don't resist them; that only creates sorrow. Let reality be reality. Let things flow naturally forward in whatever way they like.

The more I learn, the more I realize how much I don't know.

The universe is not required to be in perfect harmony with human ambition.

We are all in the gutter, but some of us are looking at the stars.

The only thing necessary for the triumph of evil is for good men to do nothing.