May I say that all this is 'mythical', and not any kind of new religion or vision. As far as I know it is merely an imaginative invention, to express, in the only way I can, some of my (dim) apprehensions of the world. All I can say is that, if it were 'history', it would be difficult to fit the lands and
events (or 'cultures') into such evidence as we possess, archaeological or geological, concerning the nearer or remoter part of what is now called Europe; though
the Shire, for instance, is expressly stated to have been in this region (I p. 12). I could have fitted things in with greater versimilitude, if the story had not become too far developed, before the question ever occurred to me. I doubt if there would have been much gain; and I hope the, evidently long but undefined, gap# in time between the Fall of
Barad-dûr and our Days is sufficient for 'literary credibility', even for readers acquainted with what is known or surmised of 'pre-history'.
I have, I suppose, constructed an imaginary time, but kept my feet on my own mother-earth for place. I prefer that to the contemporary mode of seeking remote globes in 'space'. However curious, they are alien, and not lovable with the love of blood-kin. Middle-earth is (by the way & if such a note is necessary) not my own invention. It is a modernization or alteration (N[ew] E[nglish] Dictionary] 'a perversion') of an old word for the inhabited world of Men, the oikoumenē: middle because thought of vaguely as set amidst the encircling Seas and (in the northern-imagination) between ice of the North and the fire of the South. O.English middan-geard, mediaeval E. midden-erd, middle-erd. Many reviewers seem to assume that Middle-earth is another planet!
Theologically (if the term is not too grandiose) I imagine the picture to be less dissonant from what some (including myself) believe to be the truth. But since I have deliberately written a tale, which is built on or out of certain 'religious' ideas, but is not an allegory of them (or anything else), and does not mention them overtly, still less preach them, I will not now depart from that mode, and venture on theological disquisition for which I am not fitted