Colin Nicholas Manlove (4 May 1942 in Falkirk – 1 June 2020) was a literary critic with a particular interest in fantasy. Modern Fantasy: Five Studies (1975, published as by C. N. Manlove), which considers at length works by Charles Kingsley, George MacDonald, C. S. Lewis, J. R. R. Tolkien and Mervyn Peake, was written at a time when "no serious study of the subject [of fantasy literature] has appeared". In it he posits a definition of fantasy as: His conclusion, however, is negative: each of the five major writers whose work he considered failed to sustain their original vision.