Everyone can err, but Stalin considered that he never erred, that he was always right. He never acknowledged to anyone that he made any mistake, large or small, despite the fact that he made not a few mistakes in the matter of theory and in his practical activity.
Nikita Sergeevich Khrushchev (1963). “Khrushchev Speaks: Selected Speeches, Articles, and Press Conferences, 1949-1961”