Do not trust governments more than governments trust their own people..

Profound insights arise only in debate, with a possibility of counterargument, only when there is a possibility of expressing not only correct ideas ….

In and after 1964 when I began to concern myself with the biological issues, and particularly from 1967 onwards, the extent of the problems over whic….

For me, the moral difficulties lie in the continual pressure brought to bear on my friends and immediate family, pressure which is not directed again….

Intellectual freedom is essential -- freedom to obtain and distribute information, freedom for open-minded and unfearing debate and freedom from pres….

You can't sit on two chairs at once..

I regard the death penalty as a savage and immoral institution that undermines the moral and legal foundations of society. I reject the notion that t….

Nothing threatens freedom of the personality and the meaning of life like war, poverty, terror. But there are also indirect and only slightly more re….

International affairs must be completely permeated with scientific methodology and a democratic spirit, with a fearless weighing of all facts, views,….

I've always thought that the most powerful weapon in the world was the bomb and that's why I gave it to my people, but I've come to the conclusion th….

We regard as 'scientific' a method based on deep analysis of facts, theories, and views, presupposing unprejudiced, unfearing open discussion and con….

Both now and for always, I intend to hold fast to my belief in the hidden strength of the human spirit..

Intellectual freedom is the only guarantee of a scientific - democratic approach to politics, economic development, and culture..

My present work concerns the problems connected with the theory of elementary particles, the theory of gravitation and cosmology and I shall be glad ….

Our country, like every modern state, needs profound democratic reforms. It needs political and ideological pluralism, a mixed economy and protection….

In 1947 I defended my thesis on nuclear physics, and in 1948 I was included in a group of research scientists whose task was to develop nuclear weapo….

I regard the death penalty as a savage and immoral institution that undermines the moral and legal foundations of society..

A country which does not respect the rights of its own citizens will not respect the rights of its neighbours.

I could not stop something I knew was wrong and terrible. I had an awful sense of powerlessness..