This is the reality of nuclear weapons: they may trigger a world war; a war which, unlike previous ones, destroys all of civilization.

But scientists on both sides of the iron curtain played a very significant role in maintaining the momentum of the nuclear arms race throughout the four decades of the Cold War.

The present basic philosophy is nuclear deterrence.

I did not imagine that the second half of my life would be spent on efforts to avert a mortal danger to humanity created by science.

But the nuclear powers still cling tenaciously to their weapons.

The cold war is over, but cold war thinking survives.

I saw science as being in harmony with humanity.

I appeal to my fellow scientists to remember their responsibility to humanity.

My third appeal is to my fellow citizens in all countries: Help us to establish lasting peace in the world.

Indeed, the very first resolution of the General Assembly of the United Nations - adopted unanimously - called for the elimination of nuclear weapons.

Long before the terrifying potential of the arms race was recognized, there was a widespread instinctive abhorrence of nuclear weapons, and a strong desire to get rid of them.

The false religion of lust is baser than the false religion of mother-love or patriotism or art: but lust is less likely to be made into a religion.

Productivity is being able to do things that you were never able to do before.

It is the same in life: sometimes it is more difficult to make a scene than to die.

We actors can't take the credit. We love to try to claim the credit.

Men live best on moderate means: Nature has dispensed to all men wherewithal to be happy, if mankind did but understand how to use her gifts.

Life is the only real teacher. It offers many experiences....But the lessons of experience are hidden.

After my best friend jumped off the bridge, I knew that I was next. So-Paris. With forty dollars and a one-way ticket.

A lot of people thought of me as a threat to Western civilization.

Grown people with rational minds somehow do not know what's best for them.

Death cancels everything but truth; and strips a man of everything but genius and virtue. It is a sort of natural canonization.