In the novels of his middle period Wells turned from the fantastic to the realistic, delineating with great energy and color the world he lived in. These books, considered his finest achievement, include Kipps (1905), Tono-Bungay (1909), and The History of Mr. Polly (1910). His later books are primarily novels of ideas in which he sets forth his view of the plans and concessions individuals must make in order to survive. Included among these final works, which became increasingly pessimistic as Wells aged, are The World of William Clissold (1926), The Shape of Things to Come (1933), World Brain (1938), and Mind at the End of Its Tether (1945). His other works include the immensely popular Outline of History (1920) and The Science of Life (1929), which was written in collaboration with his son G. P. Wells and Julian Huxley.
See his Experiment in Autobiography (1934); biographies by L. Dickson (1969) and N. and J. MacKenzie (1973); studies by F. McConnell (1981), J. Huntington (1982), J. R. Hammond (1988), and D. Smith (1988).