Oath of Fealty

Oath of Fealty is a 1981 novel by American writers Larry Niven and Jerry Pournelle, published originally by Phantasia Press, then by Timescape Books, with numerous reprints. Set in the near future, it involves an arcology, a large inhabited structure, called Todos Santos, which rises above a crime-ridden Los Angeles, California, but has little beyond casual contact with the city. The novel popularized the phrase "think of it as evolution in action", which occurs elsewhere in Niven's books. The novel anticipated the building of the Los Angeles Subway. It was included in David Pringle's book Science Fiction: The 100 Best Novels.