Back to Methuselah (A Metabiological Pentateuch) by George Bernard Shaw consists of a preface (The Infidel Half Century) and a series of five plays: In the Beginning: B.C. 4004 (In the Garden of Eden), The Gospel of the Brothers Barnabas: Present Day, The Thing Happens: A.D. 2170, Tragedy of an Elderly Gentleman: A.D. 3000, and As Far as Thought Can Reach: A.D. 31,920.

George Bernard Shaw, known at his insistence as Bernard Shaw, was an Irish playwright, critic, polemicist and political activist. His influence on Western theatre, culture and politics extended from the 1880s to his death and beyond. He wrote more than sixty plays, including major works such as Man and Superman (1902), Pygmalion (1913) and Saint Joan (1923). With a range incorporating both contemporary satire and historical allegory, Shaw became the leading dramatist of his generation, and in 1925 was awarded the Nobel Prize in Literature.