Zhdanov in 1937. Translated from Swedish in the article Om socialismens demokratiska erfarenheter http://www.kommunisterna.org/politik/texter/socialismens-lardomar/om-socialismens-demokratiska-erfarenheter by Anders Carlsson.
Андрей Александрович Жданов: Цитаты на английском языке
“The only conflict that is possible in Soviet culture is the conflict between good and best.”
Quoted in Aly Monroe, "Black Bear"