スタニスラフスキー・システム
From 1947 Fersen worked for more than a decade for the Teatro Stabile in Genoa, directing adaptations of Shakespeare, Pirandello, Molière, Anouilh, among others. In 1957 he began a career as a drama teacher founding an acting school in Rome, the "Studio di arti sceniche", inspired by the Stanislavski's system. He was also an author of critical and theoretical essays, aimed at an interdisciplinary theater, and an actor active on stage, on television and in films.