In the early 1920s, the Moscow Art Theatre embarked on a world tour. Several members of the troupe stayed on in the United States and went on to instruct Lee Strasberg and Stella Adler who in turn later founded their own acting schools. Lee Strasberg’s version of method acting called for the actor to dredge up past experiences (emotion memory or sense memory) to bring realistic emotions to the performance. Famous actors who studied with Lee Strasberg include James Dean, Al Pacino, Paul Newman, and Dustin Hoffman.