 Saint Joan (1923) drew widespread praise both for Shaw and for Sybil Thorndike, for whom he wrote the title role and who created the part in Britain. In the view of the commentator Nicholas Grene, Shaw's Joan, a "no-nonsense mystic, Protestant and nationalist before her time" is among the 20th century's classic leading female roles. The Apple Cart (1929), was Shaw's last popular success. He gave both that play and its successor, Too True to Be Good (1931), the subtitle "A political extravaganza", although the two works differ greatly in their themes; the first presents the politics of a nation (with a brief royal love-scene as an interlude) and the second, in Judith Evans's words, "is concerned with the social mores of the individual, and is nebulous." Shaw's plays of the 1930s were written in the shadow of worsening national and international political events. Once again, with On the Rocks (1933) and The Simpleton of the Unexpected Isles (1934), a political comedy with a clear plot was followed by an introspective drama. The first play portrays a British prime minister considering, but finally rejecting, the establishment of a dictatorship; the second is concerned with polygamy and eugenics and ends with the Day of Judgement.
