Ben Hecht, the Academy Award-winning screenwriter, was active in the Bergson Group. So were the Adlers, the "first family" of the Yiddish theater. Hecht wrote the script for "A Flag is Born." Luther Adler directed it. Adler's half-sister Celia and another ex-Yiddish theater star, Paul Muni, costarred as elderly Holocaust survivors straggling through postwar Europe. Their sister Stella, the statuesque actress and acting coach, cast her most promising student, 22-year-old Marlon Brando, in the role of David, a passionate young Zionist who encounters the elderly couple in a cemetery. Celia Adler's son, Professor Selwyn Freed, told me: "When my mother came home from the first rehearsal, she said of Brando, 'I can't remember his name, but boy, is he talented.'"