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

International affairs must be completely permeated with scientific methodology and a democratic spirit, with a fearless weighing of all facts, views, and theories, with maximum publicity of ultimate and intermediate goals, and with a consistency of principles.

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 that the most powerful weapon in the world is not the bomb but it's the truth

Intellectual freedom is essential -- freedom to obtain and distribute information, freedom for open-minded and unfearing debate and freedom from pressure by officialdom and prejudices. Such freedom of thought is the only guarantee against an infection of people by mass myths, which, in the hands of treacherous hypocrites and demagogues, can be transformed into bloody dictatorship.

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

For me, the moral difficulties lie in the continual pressure brought to bear on my friends and immediate family, pressure which is not directed against me personally but which at the same time is all around me.

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