"If I had killed Crow off I can think of least six novels I would never have written, 400,000 words' worth of very necessary experience"

This quote by Brian Lumley speaks with the value of experience in writing. He suggests that if he had exterminated Crow, a character in his novels, he would have missed out on the experience of composing six books, which would have been 400,000 words in total. This implies that the experience of writing these novels was needed for Lumley to end up being a better author. He likely learned important lessons from writing these books, such as how to craft compelling characters, develop intriguing plots, and establish a special writing style. This quote functions as a reminder that experience is important for any writer, and that even the most challenging experiences can be advantageous in the long run.