At first sight, That Hideous Strength (1945) by C.S. Lewis and the MaddAddam trilogy (2003, 2009, 2013) by Margaret Atwood seem to have little in common. Yet, despite differences of time and place, and approach of the authors, there are startling and generative similarities between the two communities they depict, the Company at St. Anne’s and the God’s Gardeners. In considering the groups' opposition to reductionist technocracy and a shared set of principles, Atwood's MaddAddam trilogy seems to be carrying on the heart of Lewis' dystopic That Hideous Strength as effective ecological and ethical speculative fiction.