'Sex versus Survival' is the first biography of Sabina Spielrein to put her life and ideas at the center of the story, and aimed at the general reader. Famous for her affair with Carl Jung and her part in the rift between Jung and Freud, Sabina Spielrein was also a highly original thinker in her own right. Drawing on her sexual encounters with Jung, she proposed a radical theory of human sexuality. It was rejected by Freud and his successors, but much of it has been vindicated by modern discoveries including the 'selfish gene' and evolutionary psychology. 'Sex versus Survival' offers a short and highly readable account of Spielrein's life and ideas. It draws on her diaries and papers, her correspondence with Jung and Freud, and a wide range of sources that have become available since John Kerr wrote 'A Dangerous Method' almost twenty years ago. 'Sex versus Survival' tells the story of Sabina Spielrein in an entirely new way, stakes a claim for her genius.