"We think that Stalin's contribution to the revolution is much more important than the mistakes he made. To use the Chinese way, the score for Stalin would be thirty percent to seventy percent: thirty for his errors and seventy for his merits. Furthermore, Chairman Mao agreed with me on the question of Stalin's score, and, after the twentieth Congress of the CPSU, members of the Communist Party of China expressed a very clear judgment of Stalin."
January 1, 1970
https://en.wikiquote.org/wiki/Joseph_Stalin