In 1920 Eisenstein moved to Moscow, and began his career in theatre working for Proletkult. His productions there were named "Gas Masks," "Listen Moscow," and "Wiseman". Eisenstein would then work as a designer for Vsevolod Meyerhold. In 1923 Eisenstein began his career as a theorist, by writing "The Montage of Attractions" for LEF. Eisenstein's first movie, "Glumov's Diary", was also made in that same year. Dziga Vertov hired at first as an "instructor" for the film The movie formed part of his theatre production "Wiseman".