Q: Passage: Del Toro has attributed the idea of giving the creatures in the film a fairy origin to the work of the writer Arthur Machen, saying in an interview: "I love the Welsh author Arthur Machen and his idea that fairy lore comes from a dark place, that it's derived from little, pre-human creatures who are really, really nasty vermin but are magical in a way, living as they do for hundreds of years. His books are what compelled me to do this." Machen's stories are specifically mentioned in the film by the librarian character. Del Toro is a long-standing admirer of Machen and said his work was also an influence on El Laberinto Del Fauno (Pan's Labyrinth) and Hellboy II: The Golden Army both of which also feature fairy creatures. The name of "Emerson Blackwood", the character who built the mansion in the film, is a tribute to Algernon Blackwood, another writer of supernatural horror stories.

Question: Based on this passage, don't be afraid of the dark creatures origin?
Let's give stream of consciousness below
To answer the above question, the relevant sentence is: Del Toro has attributed the idea of giving the creatures in the film a fairy origin to the work of the writer Arthur Machen, saying in an interview: "I love the Welsh author Arthur Machen and his idea that fairy lore comes from a dark place, that it's derived from little, pre-human creatures who are really, really nasty vermin but are magical in a way, living as they do for hundreds of years. So the answer is the work of the writer Arthur Machen.