Last and First Men: A Story of the Near and Far Future is a science fiction novel written in 1930 by the British author Olaf Stapledon. A work of unprecedented scale in the genre, it describes the history of humanity from the present onwards across two billion years and eighteen distinct human species, of which our own is the first and most primitive. Stapledon's conception of history is based on the Hegelian Dialectic, following a repetitive cycle with many varied civilizations rising from and descending back into savagery over millions of years, but it is also one of progress, as the later civilizations rise to far greater heights than the first. The book anticipates genetic engineering, and the idea of superminds composed of many telepathically-linked individuals. He was born in Seacombe, Wallasey, on the Wirral peninsula near Liverpool, the only son of William Clibbert Stapledon and Emmeline Miller. The first six years of his life were spent with his parents at Port Said. He was educated at Abbotsholme School and Balliol College, Oxford, where he acquired a BA in Modern History in 1909 and a Master's degree in 1913 citation needed]. After a brief stint as a teacher at Manchester Grammar School, he worked in shipping offices in Liverpool and Port Said from 1910 to 1913. During World War I he served with the Friends' Ambulance Unit in France and Belgium from July 1915 to January 1919. On 16 July 1919 he married Agnes Zena Miller (1894-1984), an Australian cousin whom he had first met in 1903, and who maintained a correspondence with him throughout the war from her home in Sydney. They had a daughter, Mary Sydney Stapledon (1920-), and a son, John David Stapledon (1923-). In 1920 they moved to West Kirby, and in 1925 Stapledon was awarded a PhD in philosophy from the University of Liverpool. He wrote A Modern Theory of Ethics, which was published in 1929. However he soon turned to fiction to present his ideas to a wider public. Last and First Men was very successful and prompted him to become a full-time writer. He wrote a sequel, and followed it up with many more books on subjects associated with what is now called Transhumanism.