We know that it is very difficult to draw political consequences from these facts. Since we are not politicians, one might deny us the right to judge these questions; however, our activity in pure science and its applications, which brings us into contact with many young people in this field, has bestowed upon us a responsibility for the possible consequences of this activity. This is why we cannot keep silent in these political matters. We support wholeheartedly the idea of freedom as represented today by the Western world against the ideas of communism. We do not deny that the mutual fear of the hydrogen bombs represents today an essential contribution to the maintenance of peace in the whole world and of freedom in a part of the world. However, we consider, in the long run, this way to maintain peace and freedom as completely unreliable and the danger in the case of its failure as deadly.