A short observation on STARMAKER by Stapledon

Part of an ongoing conversation. A reader known only by the mysterious initials whswhs  has this remark about myths: 

"I take a myth to be a story about beings who can act on a cosmic scale; who, rather than being part of nature, are the shapers of nature, with powers that transcend nature, and whose actions in the past made nature what it is and may have caused it to come into being in the first place. Tolkien's account of the Valar is a myth; so is Blake's story of the division of the Four Zo...