“The Helsinki Treaty confirms yet again the principle of freedom of conscience. However, a stern and relentless struggle will have to be carried on if the contents of this treaty are to be given reality. In the Soviet Union today many thousands of people are persecuted because of their convictions, both by judicial and by non-judicial organs, for the sake of their religious beliefs and for their desire to bring their children up in the spirit of religion, for reading and disseminating - often only to a few acquaintances - literature which is unwelcome to the State, but which in accordance with ordinary democratic practice is absolutely legitimate, e. g. religious literature, and for attempts to leave the country. On the moral plane the persecution of persons who have defended other victims of unjust treatment, who have worked to publish and in particular to distribute information regarding the persecution and trials of persons with deviant opinions, and of conditions in places of internment, is particularly important.”

Nobel Peace Prize Speech (1975)