sentences:  At the time that he appeared in the Yiddish film "Uncle Moses", in 1932, he was billed as the "greatest of all Yiddish actors", and in that era was also called the "Olivier of the Yiddish stage".By the 1930s, the Yiddish theater was declining as Jews became more assimilated and audiences decreased.In an interview in 1931, Schwartz said, "The Jewish stage was once a night school to which people came to learn the language [English].