S. T. Joshi, and Richard L. Tierney were dissatisfied with Derleth's invention of the term Cthulhu Mythos (Lovecraft himself used Yog-Sothothery) and his presentation of Lovecraft's fiction as having an overall pattern reflecting Derleth's own Christian world view, which they contrast with Lovecraft's depiction of an amoral universe. However, Robert M. Price points out that while Derleth's tales are distinct from Lovecraft's in their use of hope and his depiction of a struggle between good and evil, nevertheless the basis of Derlerth's systemization are found in Lovecraft. He also suggests that the differences can be overstated: Derleth was more optimistic than Lovecraft in his conception of the Mythos, but we are dealing with a difference more of degree than kind. There are indeed tales wherein Derleth's protagonists get off scot-free (like "The Shadow in the Attic", "Witches' Hollow", or "The Shuttered Room"), but often the hero is doomed (e.g., "The House in the Valley", "The Peabody Heritage", "Something in Wood"), as in Lovecraft. And it must be remembered that an occasional Lovecraftian hero does manage to overcome the odds, e.g., in "The Horror in the Museum", "The Shunned House", and 'The Case of Charles Dexter Ward'. Derleth also treated Lovecraft's Great Old Ones as representatives of elemental forces, creating new fictional entities to flesh out this framework. Such debates aside, Derleth's founding of Arkham House and his successful effort to rescue Lovecraft from literary oblivion are widely acknowledged by practitioners in the horror field as seminal events in the field. For instance, Ramsey Campbell has acknowledged Derleth's encouragement and guidance during the early part of his own writing career, and Kirby McCauley has cited Derleth and Arkham House as an inspiration for his own anthology Dark Forces. Arkham House and Derleth published Dark Carnival, the first book by Ray Bradbury, as well. Brian Lumley cites the importance of Derleth to his own Lovecraftian work, and contends in a 2009 introduction to Derleth's work that he was "...one of the first, finest, and most discerning editors and publishers of macabre fiction." Important as was Derleth's work to rescue H.P. Lovecraft from literary obscurity at the time of Lovecraft's death, Derleth also built a body of horror and spectral fiction of his own; still frequently anthologized. The best of this work, recently reprinted in four volumes of short stories – most of which were originally published in Weird Tales, illustrates Derleth's original