Scepticism and fear about biotechnology is widespread. It takes two important literary forms, namely dystopias and jeremiads. Neither is compelling in itself, but together they provide a strong collection of arguments for great caution. The dystopias examined here range from Aldous Huxley′s Brave New World to o two recent novels by Margaret Atwood. The Jeremiads range from C. S. Lewis in 1942 to Habermas and Fukuyama.