Arguably the first attempt to construct a language for interplanetary communication was the "AO" language created by the anarchist philosopher Wolf Gordin (brother of Abba Gordin) in his books "Grammar of the Language of the Mankind AO" (1920) and "Grammar of the Language AO" (1924), was presented as a language for interplanetary communication at the First International Exhibition of Interplanetary Machines and Mechanisms (dedicated to the 10th anniversary of the Russian Revolution and the 70th anniversary of the birth of Tsiolkovsky) in Moscow, 1927. The declared goal of Gordin was to construct a language which would be non-"fetishizing", non-"sociomorphic", non-gender based and non-classist. The design of the language was inspired by Russian Futurist poetry, the Gordin brothers' pan-anarchist philosophy, and Tsiolkovsky's early remarks on possible cosmic messaging (which were in accord with Hans Freudenthal's later insights). However, Sergei N. Kuznetsov notes that "Gordin nowhere defines his language as intended for space use," and that "in none of his works does he deal with problems of space communication, only mentioning 'Interplanetary Communication' in passing among other technical areas."