L'Age d'Or
Art films were also influenced by films by Spanish avant-garde creators, such as Luis Buñuel and Salvador Dalí (who made "L'Age d'Or" in 1930), and by the French playwright and filmmaker Jean Cocteau, whose 1930's avant-garde film "The Blood of a Poet" uses oneiric images throughout, including spinning wire models of a human head and rotating double-sided masks. In the 1920s, film societies began advocating the notion that films could be divided into "entertainment cinema directed towards a mass audience and a serious art cinema aimed at an intellectual audience". In England, Alfred Hitchcock and Ivor Montagu formed a film society and imported films they thought were "artistic achievements", such as "Soviet films of dialectical montage, and the expressionist films of the Universum Film A.G. (UFA) studios in Germany".