Nobel Prize controversies works there were available only in samizdat-published, clandestine form. After the Swedish government refused to hold a public award ceremony and lecture at its Moscow embassy, Solzhenitsyn refused the award altogether, commenting that the conditions set by the Swedes (who preferred a private ceremony) were "an insult to the Nobel Prize itself." Solzhenitsyn later accepted the award on 10 December 1974, after the Soviet Union banished him. Critics suggest that Solzhenitsyn was awarded the prize because of his political stance, not his writing. Leo Tolstoy was nominated for the two first-ever Nobel Prizes in Literature. In the first year, the
Nobel Prize for his purported discovery of a parasite that caused cancer. To avoid repeating this embarrassment, the awards increasingly recognised scientific discoveries that had withstood the test of time. According to Ralf Pettersson, former chairman of the Nobel Prize Committee for Physiology or Medicine, "the criterion 'the previous year' is interpreted by the Nobel Assembly as the year when the full impact of the discovery has become evident." The interval between the award and the accomplishment it recognises varies from discipline to discipline. The Literature Prize is typically awarded to recognise a cumulative lifetime body of work rather than a single