Colin Duriez (born 19 July 1947) is an English writer on fantasy, especially that of the Inklings literary group centred around the Christian authors C. S. Lewis and J. R. R. Tolkien.
He took various teaching and editing jobs, and in 2002 he started his own business in Keswick, Cumbria, InWriting, devoted to writing, editorial services, and book acquisition for publishers.
Parker finds the analysis of issues related to Christianity "profound", and states that the book is accessible both to academics and the general public, with the more scholarly details relegated to endnotes.
Petrucci finds the book remarkable in succeeding in balancing the coverage, offering fresh "insights and perspectives", and bringing out the complicated ideas that the Inklings discussed while telling the basic story of the group.
The biography is in McKinley's view unique in showing how the friendship between the two writers stimulated and inspired both of them "to write Christian mythology and apologetics".