Living later in Moscow he translated the works of Lermontov, Koltsov, Balmont, Merezhkovsky, Ivanov, Mamin-Sibiriak, Maksim Gorky, Alexander Blok, Goethe, Heine and other poets into Qazaq language.
For Whom the Bell Tolls (Koltsov was the Karkov character in the story)
In 1937 and 1939, the supporters of Trofim Lysenko published a series of propaganda articles against Nikolai Koltsov and Nikolai Vavilov.
•
US geneticist Richard Goldschmidt wrote about him: "There was the brilliant Nikolai Koltsov, probably the best Russian zoologist of the last generation, an enviable, unbelievably cultured, clear-thinking scholar, admired by everybody who knew him".