Alexander Benois , a founder member of the World of Art group, inadvertantly established the Ballets Russes. By suggesting the staging of ballet in Paris Diaghilev's Ballet Russes was born. As a patient and long standing friend of Diaghilev, Benois' mark is left on many productions ; "Petrushka" was his greatest work  consisting of a stage within a stage and displaying Benois' pure and sensitive taste. Out of the early Ballets Russes designers or indeed them all Benois' designs are the most sober in form , defiantly atmospheric and theatrically classical against novelties applied to create an effect.