Doing nothing is happiness for children and misery for old men.

A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing.

Life is either a daring adventure or nothing. Security is mostly a superstition. It does not exist in nature.

Landlords, like all other men, love to reap where they never sowed.

Sometimes - history needs a push.

Don't cry for a man who's left you - the next one may fall for your smile.

In the end, it's not the years in your life that count. It's the life in your years.

Without a measureless and perpetual uncertainty, the drama of human life would be destroyed.

Old age, especially an honoured old age, has so great authority, that this is of more value than all the pleasures of youth.

Each life makes its own immitation of immortality.

Today, more than ever before, life must be characterized by a sense of Universal responsibility, not only nation to nation and human to human, but also human to other forms of life.

The happiest is the person who suffers the least pain; the most miserable who enjoys the least pleasure.

To live is to choose. But to choose well, you must know who you are and what you stand for, where you want to go and why you want to get there.

Early in life I had to choose between honest arrogance and hypocritical humility. I chose the former and have seen no reason to change.

In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things.

Boys will be boys. And even that wouldn't matter if only we could prevent girls from being girls.

Don't go around saying the world owes you a living. The world owes you nothing. It was here first.

I am not young enough to know everything.

Man is born free and everywhere he is in chains.

The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane.

You are not stuck where you are unless you decide to be.